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What's the difference between lists enclosed by square brackets and parentheses in Python?
...ove 'y=x' example , list and tuple behave in the same way now (verified in python3.8.5)
– Youjun Hu
Aug 15 at 9:11
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Get the cartesian product of a series of lists?
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itertools.product
Available from Python 2.6.
import itertools
somelists = [
[1, 2, 3],
['a', 'b'],
[4, 5]
]
for element in itertools.product(*somelists):
print(element)
Which is the same as,
for element in itertools.product([1, 2, 3], ['a',...
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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What does Visual Studio mean by normalize inconsistent line endings?
... the Windows line end pair, while the others are typically used for Mac or Linux files.
Since you're developing in Visual Studio, you'll obviously want to choose "Windows" from the drop down. :-)
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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 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
10
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How to change the port of Tomcat from 8080 to 80?
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See Rose's answer for Linux environment !
– Marko
Apr 28 '15 at 18:56
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