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2682 lines (2412 loc) · 100 KB
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from test import support
from test.support import os_helper
from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
open as tokenize_open, Untokenizer, generate_tokens,
NEWLINE, _generate_tokens_from_c_tokenizer, DEDENT)
from io import BytesIO, StringIO
import unittest
from textwrap import dedent
from unittest import TestCase, mock
from test.test_grammar import (VALID_UNDERSCORE_LITERALS,
INVALID_UNDERSCORE_LITERALS)
from test.support import os_helper
from test.support.script_helper import run_test_script, make_script, run_python_until_end
import os
import token
# Converts a source string into a list of textual representation
# of the tokens such as:
# ` NAME 'if' (1, 0) (1, 2)`
# to make writing tests easier.
def stringify_tokens_from_source(token_generator, source_string):
result = []
num_lines = len(source_string.splitlines())
missing_trailing_nl = source_string[-1] not in '\r\n'
for type, token, start, end, line in token_generator:
if type == ENDMARKER:
break
# Ignore the new line on the last line if the input lacks one
if missing_trailing_nl and type == NEWLINE and end[0] == num_lines:
continue
type = tok_name[type]
result.append(f" {type:10} {token!r:13} {start} {end}")
return result
class TokenizeTest(TestCase):
# 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, ENCODING and
# final NEWLINE are omitted for brevity.
def check_tokenize(self, s, expected):
# Format the tokens in s in a table format.
# The ENDMARKER and final NEWLINE are omitted.
f = BytesIO(s.encode('utf-8'))
result = stringify_tokens_from_source(tokenize(f.readline), s)
self.assertEqual(result,
[" ENCODING 'utf-8' (0, 0) (0, 0)"] +
expected.rstrip().splitlines())
def test_implicit_newline(self):
# Make sure that the tokenizer puts in an implicit NEWLINE
# when the input lacks a trailing new line.
f = BytesIO("x".encode('utf-8'))
tokens = list(tokenize(f.readline))
self.assertEqual(tokens[-2].type, NEWLINE)
self.assertEqual(tokens[-1].type, ENDMARKER)
def test_basic(self):
self.check_tokenize("1 + 1", """\
NUMBER '1' (1, 0) (1, 1)
OP '+' (1, 2) (1, 3)
NUMBER '1' (1, 4) (1, 5)
""")
self.check_tokenize("if False:\n"
" # NL\n"
" \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)
NL '\\n' (3, 4) (3, 5)
INDENT ' ' (4, 0) (4, 4)
NAME 'True' (4, 4) (4, 8)
OP '=' (4, 9) (4, 10)
NAME 'False' (4, 11) (4, 16)
COMMENT '# NEWLINE' (4, 17) (4, 26)
NEWLINE '\\n' (4, 26) (4, 27)
DEDENT '' (5, 0) (5, 0)
""")
indent_error_file = b"""\
def k(x):
x += 2
x += 5
"""
readline = BytesIO(indent_error_file).readline
with self.assertRaisesRegex(IndentationError,
"unindent does not match any "
"outer indentation level"):
for tok in tokenize(readline):
pass
def test_int(self):
# Ordinary integers and binary operators
self.check_tokenize("0xff <= 255", """\
NUMBER '0xff' (1, 0) (1, 4)
OP '<=' (1, 5) (1, 7)
NUMBER '255' (1, 8) (1, 11)
""")
self.check_tokenize("0b10 <= 255", """\
NUMBER '0b10' (1, 0) (1, 4)
OP '<=' (1, 5) (1, 7)
NUMBER '255' (1, 8) (1, 11)
""")
self.check_tokenize("0o123 <= 0O123", """\
NUMBER '0o123' (1, 0) (1, 5)
OP '<=' (1, 6) (1, 8)
NUMBER '0O123' (1, 9) (1, 14)
""")
self.check_tokenize("1234567 > ~0x15", """\
NUMBER '1234567' (1, 0) (1, 7)
OP '>' (1, 8) (1, 9)
OP '~' (1, 10) (1, 11)
NUMBER '0x15' (1, 11) (1, 15)
""")
self.check_tokenize("2134568 != 1231515", """\
NUMBER '2134568' (1, 0) (1, 7)
OP '!=' (1, 8) (1, 10)
NUMBER '1231515' (1, 11) (1, 18)
""")
self.check_tokenize("(-124561-1) & 200000000", """\
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)
""")
self.check_tokenize("0xdeadbeef != -1", """\
NUMBER '0xdeadbeef' (1, 0) (1, 10)
OP '!=' (1, 11) (1, 13)
OP '-' (1, 14) (1, 15)
NUMBER '1' (1, 15) (1, 16)
""")
self.check_tokenize("0xdeadc0de & 12345", """\
NUMBER '0xdeadc0de' (1, 0) (1, 10)
OP '&' (1, 11) (1, 12)
NUMBER '12345' (1, 13) (1, 18)
""")
self.check_tokenize("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)
""")
def test_long(self):
# Long integers
self.check_tokenize("x = 0", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '0' (1, 4) (1, 5)
""")
self.check_tokenize("x = 0xfffffffffff", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '0xfffffffffff' (1, 4) (1, 17)
""")
self.check_tokenize("x = 123141242151251616110", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '123141242151251616110' (1, 4) (1, 25)
""")
self.check_tokenize("x = -15921590215012591", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
OP '-' (1, 4) (1, 5)
NUMBER '15921590215012591' (1, 5) (1, 22)
""")
def test_float(self):
# Floating point numbers
self.check_tokenize("x = 3.14159", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3.14159' (1, 4) (1, 11)
""")
self.check_tokenize("x = 314159.", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '314159.' (1, 4) (1, 11)
""")
self.check_tokenize("x = .314159", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '.314159' (1, 4) (1, 11)
""")
self.check_tokenize("x = 3e14159", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3e14159' (1, 4) (1, 11)
""")
self.check_tokenize("x = 3E123", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3E123' (1, 4) (1, 9)
""")
self.check_tokenize("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)
""")
self.check_tokenize("x = 3.14e159", """\
NAME 'x' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
NUMBER '3.14e159' (1, 4) (1, 12)
""")
def test_underscore_literals(self):
def number_token(s):
f = BytesIO(s.encode('utf-8'))
for toktype, token, start, end, line in tokenize(f.readline):
if toktype == NUMBER:
return token
return 'invalid token'
for lit in VALID_UNDERSCORE_LITERALS:
if '(' in lit:
# this won't work with compound complex inputs
continue
self.assertEqual(number_token(lit), lit)
for lit in INVALID_UNDERSCORE_LITERALS:
self.assertNotEqual(number_token(lit), lit)
def test_string(self):
# String literals
self.check_tokenize("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)
""")
self.check_tokenize("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)
""")
self.check_tokenize("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)
""")
self.check_tokenize("x = 'abc' + 'ABC'", """\
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)
""")
self.check_tokenize('y = "ABC" + "ABC"', """\
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)
""")
self.check_tokenize("x = r'abc' + r'ABC' + R'ABC' + R'ABC'", """\
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)
""")
self.check_tokenize('y = r"abc" + r"ABC" + R"ABC" + R"ABC"', """\
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)
""")
self.check_tokenize("u'abc' + U'abc'", """\
STRING "u'abc'" (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING "U'abc'" (1, 9) (1, 15)
""")
self.check_tokenize('u"abc" + U"abc"', """\
STRING 'u"abc"' (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING 'U"abc"' (1, 9) (1, 15)
""")
self.check_tokenize("b'abc' + B'abc'", """\
STRING "b'abc'" (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING "B'abc'" (1, 9) (1, 15)
""")
self.check_tokenize('b"abc" + B"abc"', """\
STRING 'b"abc"' (1, 0) (1, 6)
OP '+' (1, 7) (1, 8)
STRING 'B"abc"' (1, 9) (1, 15)
""")
self.check_tokenize("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)
""")
self.check_tokenize('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)
""")
self.check_tokenize("rb'abc' + rB'abc' + Rb'abc' + RB'abc'", """\
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)
""")
self.check_tokenize('rb"abc" + rB"abc" + Rb"abc" + RB"abc"', """\
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)
""")
# Check 0, 1, and 2 character string prefixes.
self.check_tokenize(r'"a\
de\
fg"', """\
STRING '"a\\\\\\nde\\\\\\nfg"\' (1, 0) (3, 3)
""")
self.check_tokenize(r'u"a\
de"', """\
STRING 'u"a\\\\\\nde"\' (1, 0) (2, 3)
""")
self.check_tokenize(r'rb"a\
d"', """\
STRING 'rb"a\\\\\\nd"\' (1, 0) (2, 2)
""")
self.check_tokenize(r'"""a\
b"""', """\
STRING '\"\""a\\\\\\nb\"\""' (1, 0) (2, 4)
""")
self.check_tokenize(r'u"""a\
b"""', """\
STRING 'u\"\""a\\\\\\nb\"\""' (1, 0) (2, 4)
""")
self.check_tokenize(r'rb"""a\
b\
c"""', """\
STRING 'rb"\""a\\\\\\nb\\\\\\nc"\""' (1, 0) (3, 4)
""")
self.check_tokenize('f"abc"', """\
STRING 'f"abc"' (1, 0) (1, 6)
""")
self.check_tokenize('fR"a{b}c"', """\
STRING 'fR"a{b}c"' (1, 0) (1, 9)
""")
self.check_tokenize('f"""abc"""', """\
STRING 'f\"\"\"abc\"\"\"' (1, 0) (1, 10)
""")
self.check_tokenize(r'f"abc\
def"', """\
STRING 'f"abc\\\\\\ndef"' (1, 0) (2, 4)
""")
self.check_tokenize(r'Rf"abc\
def"', """\
STRING 'Rf"abc\\\\\\ndef"' (1, 0) (2, 4)
""")
def test_function(self):
self.check_tokenize("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)
""")
self.check_tokenize("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)
""")
self.check_tokenize("def d23(a: str, b: int=3) -> int: pass", """\
NAME 'def' (1, 0) (1, 3)
NAME 'd23' (1, 4) (1, 7)
OP '(' (1, 7) (1, 8)
NAME 'a' (1, 8) (1, 9)
OP ':' (1, 9) (1, 10)
NAME 'str' (1, 11) (1, 14)
OP ',' (1, 14) (1, 15)
NAME 'b' (1, 16) (1, 17)
OP ':' (1, 17) (1, 18)
NAME 'int' (1, 19) (1, 22)
OP '=' (1, 22) (1, 23)
NUMBER '3' (1, 23) (1, 24)
OP ')' (1, 24) (1, 25)
OP '->' (1, 26) (1, 28)
NAME 'int' (1, 29) (1, 32)
OP ':' (1, 32) (1, 33)
NAME 'pass' (1, 34) (1, 38)
""")
def test_comparison(self):
# Comparison
self.check_tokenize("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)
""")
def test_shift(self):
# Shift
self.check_tokenize("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)
""")
def test_additive(self):
# Additive
self.check_tokenize("x = 1 - y + 15 - 1 + 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 '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)
""")
def test_multiplicative(self):
# Multiplicative
self.check_tokenize("x = 1//1*1/5*12%0x12@42", """\
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)
OP '@' (1, 20) (1, 21)
NUMBER '42' (1, 21) (1, 23)
""")
def test_unary(self):
# Unary
self.check_tokenize("~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)
""")
self.check_tokenize("-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)
""")
def test_selector(self):
# Selector
self.check_tokenize("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)
""")
def test_method(self):
# Methods
self.check_tokenize("@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)
""")
def test_tabs(self):
# Evil tabs
self.check_tokenize("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)
""")
def test_non_ascii_identifiers(self):
# Non-ascii identifiers
self.check_tokenize("Örter = 'places'\ngrün = 'green'", """\
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)
""")
def test_unicode(self):
# Legacy unicode literals:
self.check_tokenize("Örter = u'places'\ngrün = U'green'", """\
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)
""")
def test_async(self):
# Async/await extension:
self.check_tokenize("async = 1", """\
NAME 'async' (1, 0) (1, 5)
OP '=' (1, 6) (1, 7)
NUMBER '1' (1, 8) (1, 9)
""")
self.check_tokenize("a = (async = 1)", """\
NAME 'a' (1, 0) (1, 1)
OP '=' (1, 2) (1, 3)
OP '(' (1, 4) (1, 5)
NAME 'async' (1, 5) (1, 10)
OP '=' (1, 11) (1, 12)
NUMBER '1' (1, 13) (1, 14)
OP ')' (1, 14) (1, 15)
""")
self.check_tokenize("async()", """\
NAME 'async' (1, 0) (1, 5)
OP '(' (1, 5) (1, 6)
OP ')' (1, 6) (1, 7)
""")
self.check_tokenize("class async(Bar):pass", """\
NAME 'class' (1, 0) (1, 5)
NAME 'async' (1, 6) (1, 11)
OP '(' (1, 11) (1, 12)
NAME 'Bar' (1, 12) (1, 15)
OP ')' (1, 15) (1, 16)
OP ':' (1, 16) (1, 17)
NAME 'pass' (1, 17) (1, 21)
""")
self.check_tokenize("class async:pass", """\
NAME 'class' (1, 0) (1, 5)
NAME 'async' (1, 6) (1, 11)
OP ':' (1, 11) (1, 12)
NAME 'pass' (1, 12) (1, 16)
""")
self.check_tokenize("await = 1", """\
NAME 'await' (1, 0) (1, 5)
OP '=' (1, 6) (1, 7)
NUMBER '1' (1, 8) (1, 9)
""")
self.check_tokenize("foo.async", """\
NAME 'foo' (1, 0) (1, 3)
OP '.' (1, 3) (1, 4)
NAME 'async' (1, 4) (1, 9)
""")
self.check_tokenize("async for a in b: pass", """\
NAME 'async' (1, 0) (1, 5)
NAME 'for' (1, 6) (1, 9)
NAME 'a' (1, 10) (1, 11)
NAME 'in' (1, 12) (1, 14)
NAME 'b' (1, 15) (1, 16)
OP ':' (1, 16) (1, 17)
NAME 'pass' (1, 18) (1, 22)
""")
self.check_tokenize("async with a as b: pass", """\
NAME 'async' (1, 0) (1, 5)
NAME 'with' (1, 6) (1, 10)
NAME 'a' (1, 11) (1, 12)
NAME 'as' (1, 13) (1, 15)
NAME 'b' (1, 16) (1, 17)
OP ':' (1, 17) (1, 18)
NAME 'pass' (1, 19) (1, 23)
""")
self.check_tokenize("async.foo", """\
NAME 'async' (1, 0) (1, 5)
OP '.' (1, 5) (1, 6)
NAME 'foo' (1, 6) (1, 9)
""")
self.check_tokenize("async", """\
NAME 'async' (1, 0) (1, 5)
""")
self.check_tokenize("async\n#comment\nawait", """\
NAME 'async' (1, 0) (1, 5)
NEWLINE '\\n' (1, 5) (1, 6)
COMMENT '#comment' (2, 0) (2, 8)
NL '\\n' (2, 8) (2, 9)
NAME 'await' (3, 0) (3, 5)
""")
self.check_tokenize("async\n...\nawait", """\
NAME 'async' (1, 0) (1, 5)
NEWLINE '\\n' (1, 5) (1, 6)
OP '...' (2, 0) (2, 3)
NEWLINE '\\n' (2, 3) (2, 4)
NAME 'await' (3, 0) (3, 5)
""")
self.check_tokenize("async\nawait", """\
NAME 'async' (1, 0) (1, 5)
NEWLINE '\\n' (1, 5) (1, 6)
NAME 'await' (2, 0) (2, 5)
""")
self.check_tokenize("foo.async + 1", """\
NAME 'foo' (1, 0) (1, 3)
OP '.' (1, 3) (1, 4)
NAME 'async' (1, 4) (1, 9)
OP '+' (1, 10) (1, 11)
NUMBER '1' (1, 12) (1, 13)
""")
self.check_tokenize("async def foo(): pass", """\
NAME 'async' (1, 0) (1, 5)
NAME 'def' (1, 6) (1, 9)
NAME 'foo' (1, 10) (1, 13)
OP '(' (1, 13) (1, 14)
OP ')' (1, 14) (1, 15)
OP ':' (1, 15) (1, 16)
NAME 'pass' (1, 17) (1, 21)
""")
self.check_tokenize('''\
async def foo():
def foo(await):
await = 1
if 1:
await
async += 1
''', """\
NAME 'async' (1, 0) (1, 5)
NAME 'def' (1, 6) (1, 9)
NAME 'foo' (1, 10) (1, 13)
OP '(' (1, 13) (1, 14)
OP ')' (1, 14) (1, 15)
OP ':' (1, 15) (1, 16)
NEWLINE '\\n' (1, 16) (1, 17)
INDENT ' ' (2, 0) (2, 2)
NAME 'def' (2, 2) (2, 5)
NAME 'foo' (2, 6) (2, 9)
OP '(' (2, 9) (2, 10)
NAME 'await' (2, 10) (2, 15)
OP ')' (2, 15) (2, 16)
OP ':' (2, 16) (2, 17)
NEWLINE '\\n' (2, 17) (2, 18)
INDENT ' ' (3, 0) (3, 4)
NAME 'await' (3, 4) (3, 9)
OP '=' (3, 10) (3, 11)
NUMBER '1' (3, 12) (3, 13)
NEWLINE '\\n' (3, 13) (3, 14)
DEDENT '' (4, 2) (4, 2)
NAME 'if' (4, 2) (4, 4)
NUMBER '1' (4, 5) (4, 6)
OP ':' (4, 6) (4, 7)
NEWLINE '\\n' (4, 7) (4, 8)
INDENT ' ' (5, 0) (5, 4)
NAME 'await' (5, 4) (5, 9)
NEWLINE '\\n' (5, 9) (5, 10)
DEDENT '' (6, 0) (6, 0)
DEDENT '' (6, 0) (6, 0)
NAME 'async' (6, 0) (6, 5)
OP '+=' (6, 6) (6, 8)
NUMBER '1' (6, 9) (6, 10)
NEWLINE '\\n' (6, 10) (6, 11)
""")
self.check_tokenize('''\
async def foo():
async for i in 1: pass''', """\
NAME 'async' (1, 0) (1, 5)
NAME 'def' (1, 6) (1, 9)
NAME 'foo' (1, 10) (1, 13)
OP '(' (1, 13) (1, 14)
OP ')' (1, 14) (1, 15)
OP ':' (1, 15) (1, 16)
NEWLINE '\\n' (1, 16) (1, 17)
INDENT ' ' (2, 0) (2, 2)
NAME 'async' (2, 2) (2, 7)
NAME 'for' (2, 8) (2, 11)
NAME 'i' (2, 12) (2, 13)
NAME 'in' (2, 14) (2, 16)
NUMBER '1' (2, 17) (2, 18)
OP ':' (2, 18) (2, 19)
NAME 'pass' (2, 20) (2, 24)
DEDENT '' (3, 0) (3, 0)
""")
self.check_tokenize('''async def foo(async): await''', """\
NAME 'async' (1, 0) (1, 5)
NAME 'def' (1, 6) (1, 9)
NAME 'foo' (1, 10) (1, 13)
OP '(' (1, 13) (1, 14)
NAME 'async' (1, 14) (1, 19)
OP ')' (1, 19) (1, 20)
OP ':' (1, 20) (1, 21)
NAME 'await' (1, 22) (1, 27)
""")
self.check_tokenize('''\
def f():
def baz(): pass
async def bar(): pass
await = 2''', """\
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)
NL '\\n' (2, 0) (2, 1)
INDENT ' ' (3, 0) (3, 2)
NAME 'def' (3, 2) (3, 5)
NAME 'baz' (3, 6) (3, 9)
OP '(' (3, 9) (3, 10)
OP ')' (3, 10) (3, 11)
OP ':' (3, 11) (3, 12)
NAME 'pass' (3, 13) (3, 17)
NEWLINE '\\n' (3, 17) (3, 18)
NAME 'async' (4, 2) (4, 7)
NAME 'def' (4, 8) (4, 11)
NAME 'bar' (4, 12) (4, 15)
OP '(' (4, 15) (4, 16)
OP ')' (4, 16) (4, 17)
OP ':' (4, 17) (4, 18)
NAME 'pass' (4, 19) (4, 23)
NEWLINE '\\n' (4, 23) (4, 24)
NL '\\n' (5, 0) (5, 1)
NAME 'await' (6, 2) (6, 7)
OP '=' (6, 8) (6, 9)
NUMBER '2' (6, 10) (6, 11)
DEDENT '' (7, 0) (7, 0)
""")
self.check_tokenize('''\
async def f():
def baz(): pass
async def bar(): pass
await = 2''', """\
NAME 'async' (1, 0) (1, 5)
NAME 'def' (1, 6) (1, 9)
NAME 'f' (1, 10) (1, 11)
OP '(' (1, 11) (1, 12)
OP ')' (1, 12) (1, 13)
OP ':' (1, 13) (1, 14)
NEWLINE '\\n' (1, 14) (1, 15)
NL '\\n' (2, 0) (2, 1)
INDENT ' ' (3, 0) (3, 2)
NAME 'def' (3, 2) (3, 5)
NAME 'baz' (3, 6) (3, 9)
OP '(' (3, 9) (3, 10)
OP ')' (3, 10) (3, 11)
OP ':' (3, 11) (3, 12)
NAME 'pass' (3, 13) (3, 17)
NEWLINE '\\n' (3, 17) (3, 18)
NAME 'async' (4, 2) (4, 7)
NAME 'def' (4, 8) (4, 11)
NAME 'bar' (4, 12) (4, 15)
OP '(' (4, 15) (4, 16)
OP ')' (4, 16) (4, 17)
OP ':' (4, 17) (4, 18)
NAME 'pass' (4, 19) (4, 23)
NEWLINE '\\n' (4, 23) (4, 24)
NL '\\n' (5, 0) (5, 1)
NAME 'await' (6, 2) (6, 7)
OP '=' (6, 8) (6, 9)
NUMBER '2' (6, 10) (6, 11)
DEDENT '' (7, 0) (7, 0)
""")
class GenerateTokensTest(TokenizeTest):
def check_tokenize(self, s, expected):
# Format the tokens in s in a table format.
# The ENDMARKER and final NEWLINE are omitted.
f = StringIO(s)
result = stringify_tokens_from_source(generate_tokens(f.readline), s)
self.assertEqual(result, expected.rstrip().splitlines())
def decistmt(s):
result = []
g = tokenize(BytesIO(s.encode('utf-8')).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).decode('utf-8')
class TestMisc(TestCase):
def test_decistmt(self):
# Substitute Decimals for floats in a string of statements.
# This is an example from the docs.
from decimal import Decimal
s = '+21.3e-5*-.1234/81.7'
self.assertEqual(decistmt(s),
"+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 11 digits, and the 12th isn't close to 5, the
# rest of the output should be platform-independent.
self.assertRegex(repr(eval(s)), '-3.2171603427[0-9]*e-0+7')
# Output from calculations with Decimal should be identical across all
# platforms.
self.assertEqual(eval(decistmt(s)),
Decimal('-3.217160342717258261933904529E-7'))
class TestTokenizerAdheresToPep0263(TestCase):
"""
Test that tokenizer adheres to the coding behaviour stipulated in PEP 0263.
"""