| 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) | |
| 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) | |
| """ | |
| 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() |