大约有 11,000 项符合查询结果（耗时：0.0200秒） [XML]
What's the proper way to install pip, virtualenv, and distribute for Python?
...
You can do this without installing anything into python itself.
You don't need sudo or any privileges.
You don't need to edit any files.
Install virtualenv into a bootstrap virtual environment. Use the that virtual environment to create more. Since virtualenv ships with ...
ImportError: No module named matplotlib.pyplot
...
You have two pythons installed on your machine, one is the standard python that comes with Mac OSX and the second is the one you installed with ports (this is the one that has matplotlib installed in its library, the one that comes with m...
How can I use pickle to save a dict?
I have looked through the information that the Python docs give, but I'm still a little confused. Could somebody post sample code that would write a new file then use pickle to dump a dictionary into it?
...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...running the exact same binaries of OpenSSL 1.0.1j 15 Oct 2014 from the ArchLinux official package.
My opinion on this is that with the added security of sha1, cpu designers are more likely to improve the speed of sha1 and more programmers will be working on the algorithm's optimization than md5sum....
StringIO in Python3
I am using Python 3.2.1 and I can't import the StringIO module. I use
io.StringIO and it works, but I can't use it with numpy 's genfromtxt like this:
...
std::wstring VS std::string
...ar_t is supposed to hold a wide character, and then, things get tricky:
On Linux, a wchar_t is 4 bytes, while on Windows, it's 2 bytes.
What about Unicode, then?
The problem is that neither char nor wchar_t is directly tied to unicode.
On Linux?
Let's take a Linux OS: My Ubuntu system is already...
TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...server端如果在一定时间内没有收到的TCP会重发SYN-ACK。在Linux下，默认重试次数为5次，重试的间隔时间从1s开始每次都翻售，5次的重试时间间隔为1s, 2s, 4s, 8s, 16s，总共31s，第5次发出后还要等32s都知道第5次也超时了，所以，总共...
Calling Python in Java?
I am wondering if it is possible to call python functions from java code using jython, or is it only for calling java code from python?
...
pip install mysql-python fails with EnvironmentError: mysql_config not found
... That still created an error for me. I used apt-get install python-mysqldb instead.
– Jonatan Littke
May 25 '12 at 13:58
52
...
How to import other Python files?
How do I import other files in Python?
19 Answers
19
...