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Diffstat (limited to 'lib/python2.7/test/test_tokenize.py')
| -rw-r--r-- | lib/python2.7/test/test_tokenize.py | 625 |
1 files changed, 0 insertions, 625 deletions
diff --git a/lib/python2.7/test/test_tokenize.py b/lib/python2.7/test/test_tokenize.py deleted file mode 100644 index 489f68f..0000000 --- a/lib/python2.7/test/test_tokenize.py +++ /dev/null @@ -1,625 +0,0 @@ -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() |