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+doctests = """
+Tests for the tokenize module.
+
+ >>> import glob, random, sys
+
+The tests can be really simple. Given a small fragment of source
+code, print out a table with tokens. The ENDMARK is omitted for
+brevity.
+
+ >>> dump_tokens("1 + 1")
+ 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")
+ 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
+ ... \"""
+
+ >>> for tok in generate_tokens(StringIO(indent_error_file).readline): pass
+ Traceback (most recent call last):
+ ...
+ IndentationError: unindent does not match any outer indentation level
+
+Test roundtrip for `untokenize`. `f` is an open file or a string. The source
+code in f is tokenized, converted back to source code via tokenize.untokenize(),
+and tokenized again from the latter. The test fails if the second tokenization
+doesn't match the first.
+
+ >>> def roundtrip(f):
+ ... if isinstance(f, str): f = StringIO(f)
+ ... token_list = list(generate_tokens(f.readline))
+ ... f.close()
+ ... tokens1 = [tok[:2] for tok in token_list]
+ ... new_text = untokenize(tokens1)
+ ... readline = iter(new_text.splitlines(1)).next
+ ... tokens2 = [tok[:2] for tok in generate_tokens(readline)]
+ ... return tokens1 == tokens2
+ ...
+
+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 apperant in the expected output.
+
+ >>> roundtrip("if x == 1 : \\n"
+ ... " print x\\n")
+ True
+
+ >>> f = test_support.findfile("tokenize_tests" + os.extsep + "txt")
+ >>> roundtrip(open(f))
+ 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")
+ NUMBER '0xff' (1, 0) (1, 4)
+ OP '<=' (1, 5) (1, 7)
+ NUMBER '255' (1, 8) (1, 11)
+ >>> dump_tokens("0b10 <= 255")
+ NUMBER '0b10' (1, 0) (1, 4)
+ OP '<=' (1, 5) (1, 7)
+ NUMBER '255' (1, 8) (1, 11)
+ >>> dump_tokens("0o123 <= 0123")
+ NUMBER '0o123' (1, 0) (1, 5)
+ OP '<=' (1, 6) (1, 8)
+ NUMBER '0123' (1, 9) (1, 13)
+ >>> dump_tokens("01234567 > ~0x15")
+ NUMBER '01234567' (1, 0) (1, 8)
+ OP '>' (1, 9) (1, 10)
+ OP '~' (1, 11) (1, 12)
+ NUMBER '0x15' (1, 12) (1, 16)
+ >>> dump_tokens("2134568 != 01231515")
+ NUMBER '2134568' (1, 0) (1, 7)
+ OP '!=' (1, 8) (1, 10)
+ NUMBER '01231515' (1, 11) (1, 19)
+ >>> dump_tokens("(-124561-1) & 0200000000")
+ 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 '0200000000' (1, 14) (1, 24)
+ >>> dump_tokens("0xdeadbeef != -1")
+ 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 & 012345")
+ NUMBER '0xdeadc0de' (1, 0) (1, 10)
+ OP '&' (1, 11) (1, 12)
+ NUMBER '012345' (1, 13) (1, 19)
+ >>> dump_tokens("0xFF & 0x15 | 1234")
+ 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 = 0L")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '0L' (1, 4) (1, 6)
+ >>> dump_tokens("x = 0xfffffffffff")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '0xffffffffff (1, 4) (1, 17)
+ >>> dump_tokens("x = 123141242151251616110l")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '123141242151 (1, 4) (1, 26)
+ >>> dump_tokens("x = -15921590215012591L")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ OP '-' (1, 4) (1, 5)
+ NUMBER '159215902150 (1, 5) (1, 23)
+
+Floating point numbers
+
+ >>> dump_tokens("x = 3.14159")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '3.14159' (1, 4) (1, 11)
+ >>> dump_tokens("x = 314159.")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '314159.' (1, 4) (1, 11)
+ >>> dump_tokens("x = .314159")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '.314159' (1, 4) (1, 11)
+ >>> dump_tokens("x = 3e14159")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '3e14159' (1, 4) (1, 11)
+ >>> dump_tokens("x = 3E123")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '3E123' (1, 4) (1, 9)
+ >>> dump_tokens("x+y = 3e-1230")
+ 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")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ NUMBER '3.14e159' (1, 4) (1, 12)
+
+String literals
+
+ >>> dump_tokens("x = ''; y = \\\"\\\"")
+ 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 = \\\"'\\\"")
+ 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\\\"")
+ 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 = u'abc' + U'ABC'")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ STRING "u'abc'" (1, 4) (1, 10)
+ OP '+' (1, 11) (1, 12)
+ STRING "U'ABC'" (1, 13) (1, 19)
+ >>> dump_tokens('y = u"ABC" + U"ABC"')
+ NAME 'y' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ STRING 'u"ABC"' (1, 4) (1, 10)
+ OP '+' (1, 11) (1, 12)
+ STRING 'U"ABC"' (1, 13) (1, 19)
+ >>> dump_tokens("x = ur'abc' + Ur'ABC' + uR'ABC' + UR'ABC'")
+ NAME 'x' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ STRING "ur'abc'" (1, 4) (1, 11)
+ OP '+' (1, 12) (1, 13)
+ STRING "Ur'ABC'" (1, 14) (1, 21)
+ OP '+' (1, 22) (1, 23)
+ STRING "uR'ABC'" (1, 24) (1, 31)
+ OP '+' (1, 32) (1, 33)
+ STRING "UR'ABC'" (1, 34) (1, 41)
+ >>> dump_tokens('y = ur"abc" + Ur"ABC" + uR"ABC" + UR"ABC"')
+ NAME 'y' (1, 0) (1, 1)
+ OP '=' (1, 2) (1, 3)
+ STRING 'ur"abc"' (1, 4) (1, 11)
+ OP '+' (1, 12) (1, 13)
+ STRING 'Ur"ABC"' (1, 14) (1, 21)
+ OP '+' (1, 22) (1, 23)
+ STRING 'uR"ABC"' (1, 24) (1, 31)
+ OP '+' (1, 32) (1, 33)
+ STRING 'UR"ABC"' (1, 34) (1, 41)
+
+ >>> dump_tokens("b'abc' + B'abc'")
+ 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"')
+ 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'")
+ 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"')
+ 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)
+
+Operators
+
+ >>> dump_tokens("def d22(a, b, c=2, d=2, *k): pass")
+ 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")
+ 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")
+ 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")
+ 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 - 01 + 0x124 + z + a[5]")
+ 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 '01' (1, 17) (1, 19)
+ OP '+' (1, 20) (1, 21)
+ NUMBER '0x124' (1, 22) (1, 27)
+ OP '+' (1, 28) (1, 29)
+ NAME 'z' (1, 30) (1, 31)
+ OP '+' (1, 32) (1, 33)
+ NAME 'a' (1, 34) (1, 35)
+ OP '[' (1, 35) (1, 36)
+ NUMBER '5' (1, 36) (1, 37)
+ OP ']' (1, 37) (1, 38)
+
+Multiplicative
+
+ >>> dump_tokens("x = 1//1*1/5*12%0x12")
+ 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")
+ 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")
+ 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()")
+ 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")
+ 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.
+
+ >>>
+ >>> tempdir = os.path.dirname(f) or os.curdir
+ >>> testfiles = glob.glob(os.path.join(tempdir, "test*.py"))
+
+ >>> if not test_support.is_resource_enabled("cpu"):
+ ... testfiles = random.sample(testfiles, 10)
+ ...
+ >>> for testfile in testfiles:
+ ... if not roundtrip(open(testfile)):
+ ... print "Roundtrip failed for file %s" % testfile
+ ... break
+ ... else: True
+ True
+
+Evil tabs
+ >>> dump_tokens("def f():\\n\\tif x\\n \\tpass")
+ 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)
+
+Pathological whitespace (http://bugs.python.org/issue16152)
+ >>> dump_tokens("@ ")
+ OP '@' (1, 0) (1, 1)
+"""
+
+
+from test import test_support
+from tokenize import (untokenize, generate_tokens, NUMBER, NAME, OP,
+ STRING, ENDMARKER, tok_name)
+from StringIO import StringIO
+import os
+
+def dump_tokens(s):
+ """Print out the tokens in s in a table format.
+
+ The ENDMARKER is omitted.
+ """
+ f = StringIO(s)
+ for type, token, start, end, line in generate_tokens(f.readline):
+ if type == ENDMARKER:
+ break
+ type = tok_name[type]
+ print("%(type)-10.10s %(token)-13.13r %(start)s %(end)s" % locals())
+
+# This is an example from the docs, set up as a doctest.
+def decistmt(s):
+ """Substitute Decimals for floats in a string of statements.
+
+ >>> from decimal import Decimal
+ >>> s = 'print +21.3e-5*-.1234/81.7'
+ >>> decistmt(s)
+ "print +Decimal ('21.3e-5')*-Decimal ('.1234')/Decimal ('81.7')"
+
+ 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 12 digits, and the 13th isn't close to 5, the
+ rest of the output should be platform-independent.
+
+ >>> exec(s) #doctest: +ELLIPSIS
+ -3.21716034272e-0...7
+
+ Output from calculations with Decimal should be identical across all
+ platforms.
+
+ >>> exec(decistmt(s))
+ -3.217160342717258261933904529E-7
+ """
+
+ result = []
+ g = generate_tokens(StringIO(s).readline) # tokenize the string
+ for toknum, tokval, _, _, _ in g:
+ if toknum == NUMBER and '.' in tokval: # replace NUMBER tokens
+ result.extend([
+ (NAME, 'Decimal'),
+ (OP, '('),
+ (STRING, repr(tokval)),
+ (OP, ')')
+ ])
+ else:
+ result.append((toknum, tokval))
+ return untokenize(result)
+
+
+__test__ = {"doctests" : doctests, 'decistmt': decistmt}
+
+
+def test_main():
+ from test import test_tokenize
+ test_support.run_doctest(test_tokenize, True)
+
+if __name__ == "__main__":
+ test_main()
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-06 23:18:41 +0000