大约有 40,000 项符合查询结果（耗时：0.0316秒） [XML]
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
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The python3 format works in python 2.7.9 as well. I have not checked earlier versions.
– Fred Mitchell
Mar 3 '16 at 13:11
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Save classifier to disk in scikit-learn
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in python3, use the pickle module, which works exactly like this.
– MCSH
Nov 25 '18 at 7:22
add a comme...
Can I redirect the stdout in python into some sort of string buffer?
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from cStringIO import StringIO # Python3 use: from io import StringIO
import sys
old_stdout = sys.stdout
sys.stdout = mystdout = StringIO()
# blah blah lots of code ...
sys.stdout = old_stdout
# examine mystdout.getvalue()
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ImageUtil 扩展：图像工具扩展，提供图像处理和变换功能 · App Inventor 2 中文网
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ImageUtil 扩展
下载链接
功能概述
截图
Logo
主要功能示例
函数
使用示例
基本图像处理
图像变换
图像缩放...
File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希 ·...
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File Hash 扩展
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功能概述
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基本文件哈希计算
同时计算 SHA256 和 SHA512
文件完...
Open files in 'rt' and 'wt' modes
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Gotcha, it's documented in python3 docs. So, there is basically no difference between wt vs w and rt vs r - just explicit is better than implicit?
– alecxe
Apr 14 '14 at 2:38
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Difference between os.getenv and os.environ.get
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In addition to the answers above:
$ python3 -m timeit -s 'import os' 'os.environ.get("TERM_PROGRAM")'
200000 loops, best of 5: 1.65 usec per loop
$ python3 -m timeit -s 'import os' 'os.getenv("TERM_PROGRAM")'
200000 loops, best of 5: 1.83 usec per loop
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Python how to write to a binary file?
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You must mean < 128. As python3 complains: UnicodeEncodeError: 'ascii' codec can't encode character '\x89' in position 0: ordinal not in range(128)
– elig
Oct 7 '18 at 13:18
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Combine --user with --prefix error with setup.py install
...no prefix args required.
This is better anyway because it will default to python3 if your pip is configured to use Python 3.
(I forgot to enter python3 setup.py and it installed a 3-only package under 2.7)
(credit https://stackoverflow.com/a/1550235/4364036)
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A non-blocking read on a subprocess.PIPE in Python
...tocol and its methods are called as soon as data is ready:
#!/usr/bin/env python3
import asyncio
import os
class SubprocessProtocol(asyncio.SubprocessProtocol):
def pipe_data_received(self, fd, data):
if fd == 1: # got stdout data (bytes)
print(data)
def connection_los...