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Tests for the tokenize module.

The tests can be really simple. Given a small fragment of source
code, print out a table with tokens. The ENDMARKER is omitted for
brevity.

    >>> dump_tokens("1 + 1")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '1'           (1, 0) (1, 1)
    OP         '+'           (1, 2) (1, 3)
    NUMBER     '1'           (1, 4) (1, 5)

    >>> dump_tokens("if False:\n"
    ...             "    # NL\n"
    ...             "    True = False # NEWLINE\n")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'if'          (1, 0) (1, 2)
    NAME       'False'       (1, 3) (1, 8)
    OP         ':'           (1, 8) (1, 9)
    NEWLINE    '\n'          (1, 9) (1, 10)
    COMMENT    '# NL'        (2, 4) (2, 8)
    NL         '\n'          (2, 8) (2, 9)
    INDENT     '    '        (3, 0) (3, 4)
    NAME       'True'        (3, 4) (3, 8)
    OP         '='           (3, 9) (3, 10)
    NAME       'False'       (3, 11) (3, 16)
    COMMENT    '# NEWLINE'   (3, 17) (3, 26)
    NEWLINE    '\n'          (3, 26) (3, 27)
    DEDENT     ''            (4, 0) (4, 0)

    >>> indent_error_file = """
    ... def k(x):
    ...     x += 2
    ...   x += 5
    ... """
    >>> readline = BytesIO(indent_error_file.encode('utf-8')).readline
    >>> for tok in tokenize(readline): pass
    Traceback (most recent call last):
        ...
    IndentationError: unindent does not match any outer indentation level

There are some standard formatting practices that are easy to get right.

    >>> roundtrip("if x == 1:\n"
    ...           "    print(x)\n")
    True

    >>> roundtrip("# This is a comment\n# This also")
    True

Some people use different formatting conventions, which makes
untokenize a little trickier. Note that this test involves trailing
whitespace after the colon. Note that we use hex escapes to make the
two trailing blanks apparent in the expected output.

    >>> roundtrip("if x == 1 : \n"
    ...           "  print(x)\n")
    True

    >>> f = support.findfile("tokenize_tests.txt")
    >>> roundtrip(open(f, 'rb'))
    True

    >>> roundtrip("if x == 1:\n"
    ...           "    # A comment by itself.\n"
    ...           "    print(x) # Comment here, too.\n"
    ...           "    # Another comment.\n"
    ...           "after_if = True\n")
    True

    >>> roundtrip("if (x # The comments need to go in the right place\n"
    ...           "    == 1):\n"
    ...           "    print('x==1')\n")
    True

    >>> roundtrip("class Test: # A comment here\n"
    ...           "  # A comment with weird indent\n"
    ...           "  after_com = 5\n"
    ...           "  def x(m): return m*5 # a one liner\n"
    ...           "  def y(m): # A whitespace after the colon\n"
    ...           "     return y*4 # 3-space indent\n")
    True

Some error-handling code

    >>> roundtrip("try: import somemodule\n"
    ...           "except ImportError: # comment\n"
    ...           "    print('Can not import' # comment2\n)"
    ...           "else:   print('Loaded')\n")
    True

Balancing continuation

    >>> roundtrip("a = (3,4, \n"
    ...           "5,6)\n"
    ...           "y = [3, 4,\n"
    ...           "5]\n"
    ...           "z = {'a': 5,\n"
    ...           "'b':15, 'c':True}\n"
    ...           "x = len(y) + 5 - a[\n"
    ...           "3] - a[2]\n"
    ...           "+ len(z) - z[\n"
    ...           "'b']\n")
    True

Ordinary integers and binary operators

    >>> dump_tokens("0xff <= 255")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '0xff'        (1, 0) (1, 4)
    OP         '<='          (1, 5) (1, 7)
    NUMBER     '255'         (1, 8) (1, 11)
    >>> dump_tokens("0b10 <= 255")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '0b10'        (1, 0) (1, 4)
    OP         '<='          (1, 5) (1, 7)
    NUMBER     '255'         (1, 8) (1, 11)
    >>> dump_tokens("0o123 <= 0O123")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '0o123'       (1, 0) (1, 5)
    OP         '<='          (1, 6) (1, 8)
    NUMBER     '0O123'       (1, 9) (1, 14)
    >>> dump_tokens("1234567 > ~0x15")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '1234567'     (1, 0) (1, 7)
    OP         '>'           (1, 8) (1, 9)
    OP         '~'           (1, 10) (1, 11)
    NUMBER     '0x15'        (1, 11) (1, 15)
    >>> dump_tokens("2134568 != 1231515")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '2134568'     (1, 0) (1, 7)
    OP         '!='          (1, 8) (1, 10)
    NUMBER     '1231515'     (1, 11) (1, 18)
    >>> dump_tokens("(-124561-1) & 200000000")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    OP         '('           (1, 0) (1, 1)
    OP         '-'           (1, 1) (1, 2)
    NUMBER     '124561'      (1, 2) (1, 8)
    OP         '-'           (1, 8) (1, 9)
    NUMBER     '1'           (1, 9) (1, 10)
    OP         ')'           (1, 10) (1, 11)
    OP         '&'           (1, 12) (1, 13)
    NUMBER     '200000000'   (1, 14) (1, 23)
    >>> dump_tokens("0xdeadbeef != -1")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '0xdeadbeef'  (1, 0) (1, 10)
    OP         '!='          (1, 11) (1, 13)
    OP         '-'           (1, 14) (1, 15)
    NUMBER     '1'           (1, 15) (1, 16)
    >>> dump_tokens("0xdeadc0de & 12345")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '0xdeadc0de'  (1, 0) (1, 10)
    OP         '&'           (1, 11) (1, 12)
    NUMBER     '12345'       (1, 13) (1, 18)
    >>> dump_tokens("0xFF & 0x15 | 1234")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NUMBER     '0xFF'        (1, 0) (1, 4)
    OP         '&'           (1, 5) (1, 6)
    NUMBER     '0x15'        (1, 7) (1, 11)
    OP         '|'           (1, 12) (1, 13)
    NUMBER     '1234'        (1, 14) (1, 18)

Long integers

    >>> dump_tokens("x = 0")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '0'           (1, 4) (1, 5)
    >>> dump_tokens("x = 0xfffffffffff")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '0xffffffffff (1, 4) (1, 17)
    >>> dump_tokens("x = 123141242151251616110")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '123141242151 (1, 4) (1, 25)
    >>> dump_tokens("x = -15921590215012591")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    OP         '-'           (1, 4) (1, 5)
    NUMBER     '159215902150 (1, 5) (1, 22)

Floating point numbers

    >>> dump_tokens("x = 3.14159")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '3.14159'     (1, 4) (1, 11)
    >>> dump_tokens("x = 314159.")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '314159.'     (1, 4) (1, 11)
    >>> dump_tokens("x = .314159")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '.314159'     (1, 4) (1, 11)
    >>> dump_tokens("x = 3e14159")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '3e14159'     (1, 4) (1, 11)
    >>> dump_tokens("x = 3E123")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '3E123'       (1, 4) (1, 9)
    >>> dump_tokens("x+y = 3e-1230")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '+'           (1, 1) (1, 2)
    NAME       'y'           (1, 2) (1, 3)
    OP         '='           (1, 4) (1, 5)
    NUMBER     '3e-1230'     (1, 6) (1, 13)
    >>> dump_tokens("x = 3.14e159")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '3.14e159'    (1, 4) (1, 12)

String literals

    >>> dump_tokens("x = ''; y = \"\"")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     "''"          (1, 4) (1, 6)
    OP         ';'           (1, 6) (1, 7)
    NAME       'y'           (1, 8) (1, 9)
    OP         '='           (1, 10) (1, 11)
    STRING     '""'          (1, 12) (1, 14)
    >>> dump_tokens("x = '\"'; y = \"'\"")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     '\'"\''       (1, 4) (1, 7)
    OP         ';'           (1, 7) (1, 8)
    NAME       'y'           (1, 9) (1, 10)
    OP         '='           (1, 11) (1, 12)
    STRING     '"\'"'        (1, 13) (1, 16)
    >>> dump_tokens("x = \"doesn't \"shrink\", does it\"")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     '"doesn\'t "' (1, 4) (1, 14)
    NAME       'shrink'      (1, 14) (1, 20)
    STRING     '", does it"' (1, 20) (1, 31)
    >>> dump_tokens("x = 'abc' + 'ABC'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     "'abc'"       (1, 4) (1, 9)
    OP         '+'           (1, 10) (1, 11)
    STRING     "'ABC'"       (1, 12) (1, 17)
    >>> dump_tokens('y = "ABC" + "ABC"')
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'y'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     '"ABC"'       (1, 4) (1, 9)
    OP         '+'           (1, 10) (1, 11)
    STRING     '"ABC"'       (1, 12) (1, 17)
    >>> dump_tokens("x = r'abc' + r'ABC' + R'ABC' + R'ABC'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     "r'abc'"      (1, 4) (1, 10)
    OP         '+'           (1, 11) (1, 12)
    STRING     "r'ABC'"      (1, 13) (1, 19)
    OP         '+'           (1, 20) (1, 21)
    STRING     "R'ABC'"      (1, 22) (1, 28)
    OP         '+'           (1, 29) (1, 30)
    STRING     "R'ABC'"      (1, 31) (1, 37)
    >>> dump_tokens('y = r"abc" + r"ABC" + R"ABC" + R"ABC"')
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'y'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    STRING     'r"abc"'      (1, 4) (1, 10)
    OP         '+'           (1, 11) (1, 12)
    STRING     'r"ABC"'      (1, 13) (1, 19)
    OP         '+'           (1, 20) (1, 21)
    STRING     'R"ABC"'      (1, 22) (1, 28)
    OP         '+'           (1, 29) (1, 30)
    STRING     'R"ABC"'      (1, 31) (1, 37)

    >>> dump_tokens("u'abc' + U'abc'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     "u'abc'"      (1, 0) (1, 6)
    OP         '+'           (1, 7) (1, 8)
    STRING     "U'abc'"      (1, 9) (1, 15)
    >>> dump_tokens('u"abc" + U"abc"')
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     'u"abc"'      (1, 0) (1, 6)
    OP         '+'           (1, 7) (1, 8)
    STRING     'U"abc"'      (1, 9) (1, 15)

    >>> dump_tokens("b'abc' + B'abc'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     "b'abc'"      (1, 0) (1, 6)
    OP         '+'           (1, 7) (1, 8)
    STRING     "B'abc'"      (1, 9) (1, 15)
    >>> dump_tokens('b"abc" + B"abc"')
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     'b"abc"'      (1, 0) (1, 6)
    OP         '+'           (1, 7) (1, 8)
    STRING     'B"abc"'      (1, 9) (1, 15)
    >>> dump_tokens("br'abc' + bR'abc' + Br'abc' + BR'abc'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     "br'abc'"     (1, 0) (1, 7)
    OP         '+'           (1, 8) (1, 9)
    STRING     "bR'abc'"     (1, 10) (1, 17)
    OP         '+'           (1, 18) (1, 19)
    STRING     "Br'abc'"     (1, 20) (1, 27)
    OP         '+'           (1, 28) (1, 29)
    STRING     "BR'abc'"     (1, 30) (1, 37)
    >>> dump_tokens('br"abc" + bR"abc" + Br"abc" + BR"abc"')
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     'br"abc"'     (1, 0) (1, 7)
    OP         '+'           (1, 8) (1, 9)
    STRING     'bR"abc"'     (1, 10) (1, 17)
    OP         '+'           (1, 18) (1, 19)
    STRING     'Br"abc"'     (1, 20) (1, 27)
    OP         '+'           (1, 28) (1, 29)
    STRING     'BR"abc"'     (1, 30) (1, 37)
    >>> dump_tokens("rb'abc' + rB'abc' + Rb'abc' + RB'abc'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     "rb'abc'"     (1, 0) (1, 7)
    OP         '+'           (1, 8) (1, 9)
    STRING     "rB'abc'"     (1, 10) (1, 17)
    OP         '+'           (1, 18) (1, 19)
    STRING     "Rb'abc'"     (1, 20) (1, 27)
    OP         '+'           (1, 28) (1, 29)
    STRING     "RB'abc'"     (1, 30) (1, 37)
    >>> dump_tokens('rb"abc" + rB"abc" + Rb"abc" + RB"abc"')
    ENCODING   'utf-8'       (0, 0) (0, 0)
    STRING     'rb"abc"'     (1, 0) (1, 7)
    OP         '+'           (1, 8) (1, 9)
    STRING     'rB"abc"'     (1, 10) (1, 17)
    OP         '+'           (1, 18) (1, 19)
    STRING     'Rb"abc"'     (1, 20) (1, 27)
    OP         '+'           (1, 28) (1, 29)
    STRING     'RB"abc"'     (1, 30) (1, 37)

Operators

    >>> dump_tokens("def d22(a, b, c=2, d=2, *k): pass")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'def'         (1, 0) (1, 3)
    NAME       'd22'         (1, 4) (1, 7)
    OP         '('           (1, 7) (1, 8)
    NAME       'a'           (1, 8) (1, 9)
    OP         ','           (1, 9) (1, 10)
    NAME       'b'           (1, 11) (1, 12)
    OP         ','           (1, 12) (1, 13)
    NAME       'c'           (1, 14) (1, 15)
    OP         '='           (1, 15) (1, 16)
    NUMBER     '2'           (1, 16) (1, 17)
    OP         ','           (1, 17) (1, 18)
    NAME       'd'           (1, 19) (1, 20)
    OP         '='           (1, 20) (1, 21)
    NUMBER     '2'           (1, 21) (1, 22)
    OP         ','           (1, 22) (1, 23)
    OP         '*'           (1, 24) (1, 25)
    NAME       'k'           (1, 25) (1, 26)
    OP         ')'           (1, 26) (1, 27)
    OP         ':'           (1, 27) (1, 28)
    NAME       'pass'        (1, 29) (1, 33)
    >>> dump_tokens("def d01v_(a=1, *k, **w): pass")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'def'         (1, 0) (1, 3)
    NAME       'd01v_'       (1, 4) (1, 9)
    OP         '('           (1, 9) (1, 10)
    NAME       'a'           (1, 10) (1, 11)
    OP         '='           (1, 11) (1, 12)
    NUMBER     '1'           (1, 12) (1, 13)
    OP         ','           (1, 13) (1, 14)
    OP         '*'           (1, 15) (1, 16)
    NAME       'k'           (1, 16) (1, 17)
    OP         ','           (1, 17) (1, 18)
    OP         '**'          (1, 19) (1, 21)
    NAME       'w'           (1, 21) (1, 22)
    OP         ')'           (1, 22) (1, 23)
    OP         ':'           (1, 23) (1, 24)
    NAME       'pass'        (1, 25) (1, 29)

Comparison

    >>> dump_tokens("if 1 < 1 > 1 == 1 >= 5 <= 0x15 <= 0x12 != " +
    ...             "1 and 5 in 1 not in 1 is 1 or 5 is not 1: pass")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'if'          (1, 0) (1, 2)
    NUMBER     '1'           (1, 3) (1, 4)
    OP         '<'           (1, 5) (1, 6)
    NUMBER     '1'           (1, 7) (1, 8)
    OP         '>'           (1, 9) (1, 10)
    NUMBER     '1'           (1, 11) (1, 12)
    OP         '=='          (1, 13) (1, 15)
    NUMBER     '1'           (1, 16) (1, 17)
    OP         '>='          (1, 18) (1, 20)
    NUMBER     '5'           (1, 21) (1, 22)
    OP         '<='          (1, 23) (1, 25)
    NUMBER     '0x15'        (1, 26) (1, 30)
    OP         '<='          (1, 31) (1, 33)
    NUMBER     '0x12'        (1, 34) (1, 38)
    OP         '!='          (1, 39) (1, 41)
    NUMBER     '1'           (1, 42) (1, 43)
    NAME       'and'         (1, 44) (1, 47)
    NUMBER     '5'           (1, 48) (1, 49)
    NAME       'in'          (1, 50) (1, 52)
    NUMBER     '1'           (1, 53) (1, 54)
    NAME       'not'         (1, 55) (1, 58)
    NAME       'in'          (1, 59) (1, 61)
    NUMBER     '1'           (1, 62) (1, 63)
    NAME       'is'          (1, 64) (1, 66)
    NUMBER     '1'           (1, 67) (1, 68)
    NAME       'or'          (1, 69) (1, 71)
    NUMBER     '5'           (1, 72) (1, 73)
    NAME       'is'          (1, 74) (1, 76)
    NAME       'not'         (1, 77) (1, 80)
    NUMBER     '1'           (1, 81) (1, 82)
    OP         ':'           (1, 82) (1, 83)
    NAME       'pass'        (1, 84) (1, 88)

Shift

    >>> dump_tokens("x = 1 << 1 >> 5")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '1'           (1, 4) (1, 5)
    OP         '<<'          (1, 6) (1, 8)
    NUMBER     '1'           (1, 9) (1, 10)
    OP         '>>'          (1, 11) (1, 13)
    NUMBER     '5'           (1, 14) (1, 15)

Additive

    >>> dump_tokens("x = 1 - y + 15 - 1 + 0x124 + z + a[5]")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '1'           (1, 4) (1, 5)
    OP         '-'           (1, 6) (1, 7)
    NAME       'y'           (1, 8) (1, 9)
    OP         '+'           (1, 10) (1, 11)
    NUMBER     '15'          (1, 12) (1, 14)
    OP         '-'           (1, 15) (1, 16)
    NUMBER     '1'           (1, 17) (1, 18)
    OP         '+'           (1, 19) (1, 20)
    NUMBER     '0x124'       (1, 21) (1, 26)
    OP         '+'           (1, 27) (1, 28)
    NAME       'z'           (1, 29) (1, 30)
    OP         '+'           (1, 31) (1, 32)
    NAME       'a'           (1, 33) (1, 34)
    OP         '['           (1, 34) (1, 35)
    NUMBER     '5'           (1, 35) (1, 36)
    OP         ']'           (1, 36) (1, 37)

Multiplicative

    >>> dump_tokens("x = 1//1*1/5*12%0x12")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'x'           (1, 0) (1, 1)
    OP         '='           (1, 2) (1, 3)
    NUMBER     '1'           (1, 4) (1, 5)
    OP         '//'          (1, 5) (1, 7)
    NUMBER     '1'           (1, 7) (1, 8)
    OP         '*'           (1, 8) (1, 9)
    NUMBER     '1'           (1, 9) (1, 10)
    OP         '/'           (1, 10) (1, 11)
    NUMBER     '5'           (1, 11) (1, 12)
    OP         '*'           (1, 12) (1, 13)
    NUMBER     '12'          (1, 13) (1, 15)
    OP         '%'           (1, 15) (1, 16)
    NUMBER     '0x12'        (1, 16) (1, 20)

Unary

    >>> dump_tokens("~1 ^ 1 & 1 |1 ^ -1")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    OP         '~'           (1, 0) (1, 1)
    NUMBER     '1'           (1, 1) (1, 2)
    OP         '^'           (1, 3) (1, 4)
    NUMBER     '1'           (1, 5) (1, 6)
    OP         '&'           (1, 7) (1, 8)
    NUMBER     '1'           (1, 9) (1, 10)
    OP         '|'           (1, 11) (1, 12)
    NUMBER     '1'           (1, 12) (1, 13)
    OP         '^'           (1, 14) (1, 15)
    OP         '-'           (1, 16) (1, 17)
    NUMBER     '1'           (1, 17) (1, 18)
    >>> dump_tokens("-1*1/1+1*1//1 - ---1**1")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    OP         '-'           (1, 0) (1, 1)
    NUMBER     '1'           (1, 1) (1, 2)
    OP         '*'           (1, 2) (1, 3)
    NUMBER     '1'           (1, 3) (1, 4)
    OP         '/'           (1, 4) (1, 5)
    NUMBER     '1'           (1, 5) (1, 6)
    OP         '+'           (1, 6) (1, 7)
    NUMBER     '1'           (1, 7) (1, 8)
    OP         '*'           (1, 8) (1, 9)
    NUMBER     '1'           (1, 9) (1, 10)
    OP         '//'          (1, 10) (1, 12)
    NUMBER     '1'           (1, 12) (1, 13)
    OP         '-'           (1, 14) (1, 15)
    OP         '-'           (1, 16) (1, 17)
    OP         '-'           (1, 17) (1, 18)
    OP         '-'           (1, 18) (1, 19)
    NUMBER     '1'           (1, 19) (1, 20)
    OP         '**'          (1, 20) (1, 22)
    NUMBER     '1'           (1, 22) (1, 23)

Selector

    >>> dump_tokens("import sys, time\nx = sys.modules['time'].time()")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'import'      (1, 0) (1, 6)
    NAME       'sys'         (1, 7) (1, 10)
    OP         ','           (1, 10) (1, 11)
    NAME       'time'        (1, 12) (1, 16)
    NEWLINE    '\n'          (1, 16) (1, 17)
    NAME       'x'           (2, 0) (2, 1)
    OP         '='           (2, 2) (2, 3)
    NAME       'sys'         (2, 4) (2, 7)
    OP         '.'           (2, 7) (2, 8)
    NAME       'modules'     (2, 8) (2, 15)
    OP         '['           (2, 15) (2, 16)
    STRING     "'time'"      (2, 16) (2, 22)
    OP         ']'           (2, 22) (2, 23)
    OP         '.'           (2, 23) (2, 24)
    NAME       'time'        (2, 24) (2, 28)
    OP         '('           (2, 28) (2, 29)
    OP         ')'           (2, 29) (2, 30)

Methods

    >>> dump_tokens("@staticmethod\ndef foo(x,y): pass")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    OP         '@'           (1, 0) (1, 1)
    NAME       'staticmethod (1, 1) (1, 13)
    NEWLINE    '\n'          (1, 13) (1, 14)
    NAME       'def'         (2, 0) (2, 3)
    NAME       'foo'         (2, 4) (2, 7)
    OP         '('           (2, 7) (2, 8)
    NAME       'x'           (2, 8) (2, 9)
    OP         ','           (2, 9) (2, 10)
    NAME       'y'           (2, 10) (2, 11)
    OP         ')'           (2, 11) (2, 12)
    OP         ':'           (2, 12) (2, 13)
    NAME       'pass'        (2, 14) (2, 18)

Backslash means line continuation, except for comments

    >>> roundtrip("x=1+\\n"
    ...           "1\n"
    ...           "# This is a comment\\n"
    ...           "# This also\n")
    True
    >>> roundtrip("# Comment \\nx = 0")
    True

Two string literals on the same line

    >>> roundtrip("'' ''")
    True

Test roundtrip on random python modules.
pass the '-ucpu' option to process the full directory.

    >>> import random
    >>> tempdir = os.path.dirname(f) or os.curdir
    >>> testfiles = glob.glob(os.path.join(tempdir, "test*.py"))

Tokenize is broken on test_pep3131.py because regular expressions are
broken on the obscure unicode identifiers in it. *sigh*
With roundtrip extended to test the 5-tuple mode of  untokenize,
7 more testfiles fail.  Remove them also until the failure is diagnosed.

    >>> testfiles.remove(os.path.join(tempdir, "test_pep3131.py"))
    >>> for f in ('buffer', 'builtin', 'fileio', 'inspect', 'os', 'platform', 'sys'):
    ...     testfiles.remove(os.path.join(tempdir, "test_%s.py") % f)
    ...
    >>> if not support.is_resource_enabled("cpu"):
    ...     testfiles = random.sample(testfiles, 10)
    ...
    >>> for testfile in testfiles:
    ...     if not roundtrip(open(testfile, 'rb')):
    ...         print("Roundtrip failed for file %s" % testfile)
    ...         break
    ... else: True
    True

Evil tabs

    >>> dump_tokens("def f():\n\tif x\n        \tpass")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'def'         (1, 0) (1, 3)
    NAME       'f'           (1, 4) (1, 5)
    OP         '('           (1, 5) (1, 6)
    OP         ')'           (1, 6) (1, 7)
    OP         ':'           (1, 7) (1, 8)
    NEWLINE    '\n'          (1, 8) (1, 9)
    INDENT     '\t'          (2, 0) (2, 1)
    NAME       'if'          (2, 1) (2, 3)
    NAME       'x'           (2, 4) (2, 5)
    NEWLINE    '\n'          (2, 5) (2, 6)
    INDENT     '        \t'  (3, 0) (3, 9)
    NAME       'pass'        (3, 9) (3, 13)
    DEDENT     ''            (4, 0) (4, 0)
    DEDENT     ''            (4, 0) (4, 0)

Non-ascii identifiers

    >>> dump_tokens("Örter = 'places'\ngrün = 'green'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'Örter'       (1, 0) (1, 5)
    OP         '='           (1, 6) (1, 7)
    STRING     "'places'"    (1, 8) (1, 16)
    NEWLINE    '\n'          (1, 16) (1, 17)
    NAME       'grün'        (2, 0) (2, 4)
    OP         '='           (2, 5) (2, 6)
    STRING     "'green'"     (2, 7) (2, 14)

Legacy unicode literals:

    >>> dump_tokens("Örter = u'places'\ngrün = U'green'")
    ENCODING   'utf-8'       (0, 0) (0, 0)
    NAME       'Örter'       (1, 0) (1, 5)
    OP         '='           (1, 6) (1, 7)
    STRING     "u'places'"   (1, 8) (1, 17)
    NEWLINE    '\n'          (1, 17) (1, 18)
    NAME       'grün'        (2, 0) (2, 4)
    OP         '='           (2, 5) (2, 6)
    STRING     "U'green'"    (2, 7) (2, 15)
i(usupport(
utokenizeu	_tokenizeu
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    The test fails if the 3 pair tokenizations do not match.

    When untokenize bugs are fixed, untokenize with 5-tuples should
    reproduce code that does not contain a backslash continuation
    following spaces.  A proper test should test this.

    This function would be more useful for correcting bugs if it reported
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    The format of the exponent is inherited from the platform C library.
    Known cases are "e-007" (Windows) and "e-07" (not Windows).  Since
    we're only showing 11 digits, and the 12th isn't close to 5, the
    rest of the output should be platform-independent.

    >>> exec(s) #doctest: +ELLIPSIS
    -3.2171603427...e-0...7

    Output from calculations with Decimal should be identical across all
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u1TestDetectEncoding.get_readline.<locals>.readline((uselfulinesureadline((uindexulinesu7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyuget_readline1suTestDetectEncoding.get_readlinecCsUd}t|j|��\}}|j|d�|j|t|dd���dS(Ns# something
sprint(something)
sdo_something(else)
uutf-8i(s# something
sprint(something)
sdo_something(else)
(udetect_encodinguget_readlineuassertEqualulist(uselfulinesuencodinguconsumed_lines((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyutest_no_bom_no_encoding_cookie<su1TestDetectEncoding.test_no_bom_no_encoding_cookiecCsKd}t|j|��\}}|j|d�|j|ddg�dS(Ns# something
sprint(something)
sdo_something(else)
u	utf-8-sigs# something
(s# something
sprint(something)
sdo_something(else)
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_lines((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyutest_bom_no_cookieFs	u%TestDetectEncoding.test_bom_no_cookiecCsHd}t|j|��\}}|j|d�|j|dg�dS(Ns# -*- coding: latin-1 -*-
sprint(something)
sdo_something(else)
u
iso-8859-1(s# -*- coding: latin-1 -*-
sprint(something)
sdo_something(else)
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_lines((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyutest_cookie_first_line_no_bomQsu0TestDetectEncoding.test_cookie_first_line_no_bomcCsHd}t|j|��\}}|j|d�|j|dg�dS(Ns# coding=utf-8
sprint(something)
sdo_something(else)
u	utf-8-sigs# coding=utf-8
(s# coding=utf-8
sprint(something)
sdo_something(else)
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_lines((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu&test_matched_bom_and_cookie_first_line[su9TestDetectEncoding.test_matched_bom_and_cookie_first_linecCs,d}|j|�}|jtt|�dS(Ns## vim: set fileencoding=ascii :
sprint(something)
sdo_something(else)
(s## vim: set fileencoding=ascii :
sprint(something)
sdo_something(else)
(uget_readlineuassertRaisesuSyntaxErrorudetect_encoding(uselfulinesureadline((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu<test_mismatched_bom_and_cookie_first_line_raises_syntaxerrores
uOTestDetectEncoding.test_mismatched_bom_and_cookie_first_line_raises_syntaxerrorcCsQd}t|j|��\}}|j|d�ddg}|j||�dS(Ns
#! something
s # vim: set fileencoding=ascii :
sprint(something)
sdo_something(else)
uascii(s
#! something
s # vim: set fileencoding=ascii :
sprint(something)
sdo_something(else)
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_linesuexpected((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyutest_cookie_second_line_no_bomnsu1TestDetectEncoding.test_cookie_second_line_no_bomcCsKd}t|j|��\}}|j|d�|j|ddg�dS(Ns#! something
sf# coding=utf-8
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u	utf-8-sigs
#! something
(s#! something
sf# coding=utf-8
sprint(something)
sdo_something(else)
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_lines((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu'test_matched_bom_and_cookie_second_linezs	u:TestDetectEncoding.test_matched_bom_and_cookie_second_linecCs,d}|j|�}|jtt|�dS(Ns#! something
s # vim: set fileencoding=ascii :
sprint(something)
sdo_something(else)
(s#! something
s # vim: set fileencoding=ascii :
sprint(something)
sdo_something(else)
(uget_readlineuassertRaisesuSyntaxErrorudetect_encoding(uselfulinesureadline((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu=test_mismatched_bom_and_cookie_second_line_raises_syntaxerror�suPTestDetectEncoding.test_mismatched_bom_and_cookie_second_line_raises_syntaxerrorcCsNd}t|j|��\}}|j|d�dg}|j||�dS(Nsprint('£')
s%# vim: set fileencoding=iso8859-15 :
s
print('€')
uutf-8(sprint('£')
s%# vim: set fileencoding=iso8859-15 :
s
print('€')
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_linesuexpected((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu/test_cookie_second_line_noncommented_first_line�s	uBTestDetectEncoding.test_cookie_second_line_noncommented_first_linecCsQd}t|j|��\}}|j|d�ddg}|j||�dS(Ns
#print('£')
s%# vim: set fileencoding=iso8859-15 :
s
print('€')
u
iso8859-15(s
#print('£')
s%# vim: set fileencoding=iso8859-15 :
s
print('€')
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_linesuexpected((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu,test_cookie_second_line_commented_first_line�su?TestDetectEncoding.test_cookie_second_line_commented_first_linecCsQd}t|j|��\}}|j|d�ddg}|j||�dS(Ns
s%# vim: set fileencoding=iso8859-15 :
s
print('€')
u
iso8859-15(s
s%# vim: set fileencoding=iso8859-15 :
s
print('€')
(udetect_encodinguget_readlineuassertEqual(uselfulinesuencodinguconsumed_linesuexpected((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyu(test_cookie_second_line_empty_first_line�su;TestDetectEncoding.test_cookie_second_line_empty_first_linec	Cs�d}x�|D]}}xtdD]l}|jd|�}d	d
|jd�dd
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WdS(Nulatin-1u
iso-8859-1uiso-latin-1ulatin-1-unixuiso-8859-1-unixuiso-latin-1-macu-u_s#!/usr/bin/python
s
# coding: uasciis
sprint(things)
sdo_something += 4
(ulatin-1u
iso-8859-1uiso-latin-1ulatin-1-unixuiso-8859-1-unixuiso-latin-1-mac(u-u_(ureplaceuencodeuget_readlineudetect_encodinguassertEqual(	uselfu	encodingsuencodingurepuenculinesurlufounduconsumed_lines((u7/opt/alt/python33/lib64/python3.3/test/test_tokenize.pyutest_latin1_normalization�s

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