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Is it possible to install another version of Python to Virtualenv?
I have a shared account in a web-hosting that has Python 2.4 installed, but my code is not compatible with 2.4. Is it possible to install Python 2.6 directly to Virtualenv?
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Check to see if python script is running
I have a python daemon running as a part of my web app/ How can I quickly check (using python) if my daemon is running and, if not, launch it?
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How can I randomize the lines in a file using standard tools on Red Hat Linux?
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A one-liner for python:
python -c "import random, sys; lines = open(sys.argv[1]).readlines(); random.shuffle(lines); print ''.join(lines)," myFile
And for printing just a single random line:
python -c "import random, sys; print random.ch...
Automatically import modules when entering the python or ipython interpreter
... myself typing import numpy as np almost every single time I fire up the python interpreter. How do I set up the python or ipython interpreter so that numpy is automatically imported?
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Redirecting stdout to “nothing” in python
...prints in. You then just use is in a with-statement to silence all output.
Python 2:
import os
import sys
from contextlib import contextmanager
@contextmanager
def silence_stdout():
old_target = sys.stdout
try:
with open(os.devnull, "w") as new_target:
sys.stdout = new_t...
Make sure only a single instance of a program is running
Is there a Pythonic way to have only one instance of a program running?
20 Answers
20...
Getting command-line password input in Python
... getpass is a standard library module that's been around since at least Python 2.5
– jocassid
Aug 9 '18 at 19:43
1
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pip broke. how to fix DistributionNotFound error?
...e.
I think this is how you should do it nowadays..
$ sudo apt-get install python-pip python-dev build-essential
$ sudo pip install --upgrade pip
$ sudo pip install --upgrade virtualenv
share
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Windows path in Python
...the correct configuration for your OS:
os.path.join(mydir, myfile)
From python 3.4 you can also use the pathlib module. This is equivelent to the above:
pathlib.Path(mydir, myfile)
or
pathlib.Path(mydir) / myfile
sha...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Paint的实例化操作不要写在onDraw()方法中等);
对于并发下载等类似逻辑的实现尽量避免多次创建线程对象,而是交给线程池处理。
当然了,有了上面说明GC导致的性能后我们就该定位分析问题了,可以通过运行DDMS->Allocation T...