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python3: make lopen a direct alias for the builtin open

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Thanks to PEP 0446, its reason to exist no longer applies and it is the
default behavior. However, trying to use it on python3 resulted in
errors since "e" is no longer a valid open() mode.
This commit is contained in:
Eli Schwartz 2019-03-21 16:53:31 -04:00
parent 09e97e5af1
commit 69711828bd
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GPG Key ID: CEB167EFB5722BD6
1 changed files with 8 additions and 4 deletions
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12
src/calibre/startup.py
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@ -10,7 +10,7 @@ Perform various initialization tasks.
import locale, sys
# Default translation is NOOP
from polyglot.builtins import builtins, unicode_type
from polyglot.builtins import builtins, is_py3, unicode_type
builtins.__dict__['_'] = lambda s: s
# For strings which belong in the translation tables, but which shouldn't be
@ -125,7 +125,9 @@ if not _run_once:
pass
# local_open() opens a file that wont be inherited by child processes
if iswindows:
if is_py3:
local_open = open # PEP 446
elif iswindows:
def local_open(name, mode='r', bufsize=-1):
mode += 'N'
return open(name, mode, bufsize)
@ -223,6 +225,8 @@ def test_lopen():
if win32api.GetHandleInformation(msvcrt.get_osfhandle(f.fileno())) & 0b1:
raise SystemExit('File handle is inheritable!')
else:
import fcntl
def assert_not_inheritable(f):
if not fcntl.fcntl(f, fcntl.F_GETFD) & fcntl.FD_CLOEXEC:
raise SystemExit('File handle is inheritable!')
@ -238,14 +242,14 @@ def test_lopen():
print('O_CREAT tested')
with copen(n, 'w+b') as f:
f.write('two')
f.write(b'two')
with copen(n, 'r') as f:
if f.read() == 'two':
print('O_TRUNC tested')
else:
raise Exception('O_TRUNC failed')
with copen(n, 'ab') as f:
f.write('three')
f.write(b'three')
with copen(n, 'r+') as f:
if f.read() == 'twothree':
print('O_APPEND tested')