大约有 9,000 项符合查询结果（耗时：0.0291秒） [XML]
How to check if variable is string with python 2 and 3 compatibility
I'm aware that I can use: isinstance(x, str) in python-3.x but I need to check if something is a string in python-2.x as well. Will isinstance(x, str) work as expected in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
...
Is there a 'foreach' function in Python 3?
...occurence of "foreach" I've seen (PHP, C#, ...) does basically the same as pythons "for" statement.
These are more or less equivalent:
// PHP:
foreach ($array as $val) {
print($val);
}
// C#
foreach (String val in array) {
console.writeline(val);
}
// Python
for val in array:
print(v...
SSMS插件开发指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...发：
探索点：弹出SSMS对话框、SQL执行的事件、结果Grid数据的获取。
需求：工具栏添加一个菜单，点击菜单弹出对话框，点“Execute SQL”后弹出测试消息框，显示结果Grid第一个单元格的内容。
基础代码请自行使用VS2012完成...
What is __main__.py?
...
Often, a Python program is run by naming a .py file on the command line:
$ python my_program.py
You can also create a directory or zipfile full of code, and include a __main__.py. Then you can simply name the directory or zipfile ...
How to parse/read a YAML file into a Python object? [duplicate]
How to parse/read a YAML file into a Python object?
3 Answers
3
...
Using python's eval() vs. ast.literal_eval()?
... of eval.
ast.literal_eval raises an exception if the input isn't a valid Python datatype, so the code won't be executed if it's not.
Use ast.literal_eval whenever you need eval. You shouldn't usually evaluate literal Python statements.
...
Cron and virtualenv
...
You should be able to do this by using the python in your virtual environment:
/home/my/virtual/bin/python /home/my/project/manage.py command arg
EDIT: If your django project isn't in the PYTHONPATH, then you'll need to switch to the right directory:
cd /home/my/p...
How to check type of files without extensions in python?
...
There are Python libraries that can recognize files based on their content (usually a header / magic number) and that don't rely on the file name or extension.
If you're addressing many different file types, you can use python-magic. ...
What does Python's eval() do?
In the book that I am reading on Python, it keeps using the code eval(input('blah'))
10 Answers
...
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?
...