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What's the idiomatic syntax for prepending to a short python list?
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@MattM. If you insert at the front of a list, python has to move all the other items one space forwards, lists can't "make space at the front". collections.deque (double ended queue) has support for "making space at the front" and is much faster in this case.
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How to get last items of a list in Python?
...e integers with the slicing operator for that. Here's an example using the python CLI interpreter:
>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]
the important line is a[-9:]
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家政O2O百家争鸣后的卡位战：烧钱补贴并非良药 - 资讯 - 清泛网移动版 - 专...
...，根据“云家政”去年年底发布的北上广深四地家政行业数据报告，目前一线城市普遍的家政从业人员供需缺口均在10万至20万人之间，春节前后一个月更是会遭遇30%至50%的从业人员缺口。另有数据显示，今年国内家政服务市场...
How to use “/” (directory separator) in both Linux and Windows in Python?
I have written a code in python which uses / to make a particular file in a folder, if I want to use the code in windows it will not work, is there a way by which I can use the code in Windows and Linux.
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Can Python print a function definition?
...nt out the definition of a function. Is there a way to accomplish this in Python?
7 Answers
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adding header to python requests module
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From http://docs.python-requests.org/en/latest/user/quickstart/
url = 'https://api.github.com/some/endpoint'
payload = {'some': 'data'}
headers = {'content-type': 'application/json'}
r = requests.post(url, data=json.dumps(payload), headers=...
How to check if a value exists in a dictionary (python)
I have the following dictionary in python:
6 Answers
6
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What does it mean if a Python object is “subscriptable” or not?
...ivalent to mathematical notation that uses actual subscripts; e.g. a[1] is Python for what mathematicians would write as a₁. So "subscriptable" means "able to be subscripted". Which, in Python terms, means it has to implement __getitem__(), since a[1] is just syntactic sugar for a.__getitem__(1).
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How do I copy an entire directory of files into an existing directory using Python?
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See this similar question.
Copy directory contents into a directory with python
Reference - https://docs.python.org/3/distutils/apiref.html#distutils.dir_util.copy_tree
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How to “properly” print a list?
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In Python 2:
mylist = ['x', 3, 'b']
print '[%s]' % ', '.join(map(str, mylist))
In Python 3 (where print is a builtin function and not a syntax feature anymore):
mylist = ['x', 3, 'b']
print('[%s]' % ', '.join(map(str, mylist...