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Rename a dictionary key
... a new key and removing the old key is how you can achieve the "rename" in python.
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Is there a decorator to simply cache function return values?
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Starting from Python 3.2 there is a built-in decorator:
@functools.lru_cache(maxsize=100, typed=False)
Decorator to wrap a function with a memoizing callable that saves up to the maxsize most recent calls. It can save time when an expen...
How do I write data into CSV format as string (not file)?
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In Python 3:
>>> import io
>>> import csv
>>> output = io.StringIO()
>>> csvdata = [1,2,'a','He said "what do you mean?"',"Whoa!\nNewlines!"]
>>> writer = csv.writer(output, quoting=...
Find intersection of two nested lists?
... 16]]
c3 = [[13, 32], [7, 13, 28], [1,6]]
Then here is your solution for Python 2:
c3 = [filter(lambda x: x in c1, sublist) for sublist in c2]
In Python 3 filter returns an iterable instead of list, so you need to wrap filter calls with list():
c3 = [list(filter(lambda x: x in c1, sublist)) fo...
Can I read the hash portion of the URL on my server-side application (PHP, Ruby, Python, etc.)?
... accessing http://localhost:8000/hello?foo=bar#this-is-not-sent-to-server
python -c "import SimpleHTTPServer;SimpleHTTPServer.test()"
Serving HTTP on 0.0.0.0 port 8000 ...
localhost - - [02/Jun/2009 12:48:47] code 404, message File not found
localhost - - [02/Jun/2009 12:48:47] "GET /hello?foo=bar ...
How do I check whether a file exists without exceptions?
...s.path.isfile(fname)
if you need to be sure it's a file.
Starting with Python 3.4, the pathlib module offers an object-oriented approach (backported to pathlib2 in Python 2.7):
from pathlib import Path
my_file = Path("/path/to/file")
if my_file.is_file():
# file exists
To check a directo...
How to concatenate items in a list to a single string?
...rse operation is list.split(" "). Any idea if this is going to be added to Python's methods for lists?
– Wouter Thielen
Aug 23 '15 at 10:02
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How to prevent auto-closing of console after the execution of batch file
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Add cmd.exe as a new line below the code you want to execute:
c:\Python27\python D:\code\simple_http_server.py
cmd.exe
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Skipping Iterations in Python
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The real question: Is leavin out the 'g' in 'lookin' Pythonic?
– Mason Gardner
Jan 12 '17 at 18:22
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Python: access class property from string [duplicate]
I have a class like the following:
4 Answers
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