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pandas DataFrame: replace nan values with average of columns
...w why, but df.fillna(df.mean()) didnt work, only your version with apply. Python 3
– Rocketq
Dec 25 '17 at 11:22
add a comment
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Generate a heatmap in MatPlotLib using a scatter data set
...his output to a PNG/PDF file instead of only displaying in an interactive IPython session? I'm trying to get this as some sort of normal axes instance, where I can add a title, axis labels, etc. and then do the normal savefig() like I would do for any other typical matplotlib plot.
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How do I add multiple arguments to my custom template filter in a django template?
...t possible according to this section of the docs:
Custom filters are just Python functions that take one or two arguments:
The value of the variable (input) --
not necessarily a string.
The value of the argument -- this can have a
default value, or be left out altogether.
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How to auto-remove trailing whitespace in Eclipse?
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Good for Java; good for C/C++ too; but not for Python in PyDev.
– Craig McQueen
Nov 24 '09 at 5:37
14
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How to throw a C++ exception
...sue:
In function ‘void illustrateDerivedExceptionCatch()’:
item12Linux.cpp:48:2: warning: exception of type ‘MyException’ will be caught
catch(const MyException& e)
^~~~~
item12Linux.cpp:43:2: warning: by earlier handler for ‘std::exception’
catch (const exc...
Finding all possible combinations of numbers to reach a given sum
...e sums filtering out those that reach the target. Here is the algorithm in Python:
def subset_sum(numbers, target, partial=[]):
s = sum(partial)
# check if the partial sum is equals to target
if s == target:
print "sum(%s)=%s" % (partial, target)
if s >= target:
...
Difference between author and committer in Git?
...t-patch + git apply can generate author != committer
In projects like the Linux kernel where patches are:
generated by git format-patch
sent by email, either by copy pasting, or more commonly with git send-email
applied by another person with either git apply or git am: How to use git am to apply...
How to get rid of punctuation using NLTK tokenizer?
... not really need NLTK to remove punctuation. You can remove it with simple python. For strings:
import string
s = '... some string with punctuation ...'
s = s.translate(None, string.punctuation)
Or for unicode:
import string
translate_table = dict((ord(char), None) for char in string.punctuation...
What is the purpose of the : (colon) GNU Bash builtin?
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@zagpoint Is this where Python gets its use of docstrings as multiline comments from?
– Sapphire_Brick
Jun 18 at 0:51
add a ...
defaultdict of defaultdict?
...defaultdict(<type 'int'>, {})
>>> print d[0]["x"]
0
Since Python 2.7, there's an even better solution using Counter:
>>> from collections import Counter
>>> c = Counter()
>>> c["goodbye"]+=1
>>> c["and thank you"]=42
>>> c["for the fish"...