Files
python-uncompyle6/test/simple_source/bug36/01_fstring.py
2019-05-13 09:41:16 -04:00

69 lines
1.7 KiB
Python

# Self-checking test.
# String interpolation tests
var1 = 'x'
var2 = 'y'
abc = 'def'
assert (f"interpolate {var1} strings {var2!r} {var2!s} 'py36" ==
"interpolate x strings 'y' y 'py36")
assert 'def0' == f'{abc}0'
assert 'defdef' == f'{abc}{abc!s}'
# From 3.6 functools.py
# Bug was handling format operator strings.
k, v = "1", ["2"]
x = f"{k}={v!r}"
y = f"functools.{x}({', '.join(v)})"
assert x == "1=['2']"
assert y == "functools.1=['2'](2)"
# From 3.6 http/client.py
# Bug is in handling X
chunk = ['a', 'b', 'c']
chunk2 = 'd'
chunk = f'{len(chunk):X}' + chunk2
assert chunk == '3d'
chunk = b'abc'
chunk2 = 'd'
chunk = f'{len(chunk):X}\r\n'.encode('ascii') + chunk \
+ b'\r\n'
assert chunk == b'3\r\nabc\r\n'
# From 3.6.8 idlelib/pyshell.py
# Bug was handling '''
import os
filename = '.'
source = 'foo'
source = (f"__file__ = r'''{os.path.abspath(filename)}'''\n"
+ source + "\ndel __file__")
# Note how { and } are *not* escaped here
f = 'one'
name = 'two'
assert(f"{f}{'{{name}}'} {f}{'{name}'}") == 'one{{name}} one{name}'
# From 3.7.3 dataclasses.py
log_rounds = 5
assert "05$" == f'{log_rounds:02d}$'
def testit(a, b, l):
# print(l)
return l
# The call below shows the need for BUILD_STRING to count expr arguments.
# Also note that we use {{ }} to escape braces in contrast to the example
# above.
def _repr_fn(fields):
return testit('__repr__',
('self',),
['return xx + f"(' +
', '.join([f"{f}={{self.{f}!r}}"
for f in fields]) +
')"'])
fields = ['a', 'b', 'c']
assert _repr_fn(fields) == ['return xx + f"(a={self.a!r}, b={self.b!r}, c={self.c!r})"']