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Creating dataframe from a dictionary where entries have different lengths
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In Python 3.x:
import pandas as pd
import numpy as np
d = dict( A = np.array([1,2]), B = np.array([1,2,3,4]) )
pd.DataFrame(dict([ (k,pd.Series(v)) for k,v in d.items() ]))
Out[7]:
A B
0 1 1
1 2 2
2 NaN 3
3 N...
Converting a Pandas GroupBy output from Series to DataFrame
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Is this also true in Python 3? I'm finding a groupby function returning the pandas.core.groupby.DataFrameGroupBy object, not pandas.core.frame.DataFrame.
– Adrian Keister
Sep 10 '18 at 17:31
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Updating Bootstrap to version 3 - what do I have to do?
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I just migrated to 3.0.3 and this python app https://pypi.python.org/pypi/b2tob3/0.4 made it pretty easy task.
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Sorting list based on values from another list?
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You are using Python 3. In Python 2, zip produced a list. Now it produces an iterable object. sorted(zip(...)) should still work, or: them = list(zip(...)); them.sort()
– Ned Batchelder
Jan 23 '18...
Why is this program erroneously rejected by three C++ compilers?
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You could try the following python script. Note that you need to install PIL and pytesser.
from pytesser import *
image = Image.open('helloworld.png') # Open image object using PIL
print image_to_string(image) # Run tesseract.exe on image
To use...
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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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
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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:
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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
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