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How do I check which version of NumPy I'm using?
...David CDavid C
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How to loop through files matching wildcard in batch file
I have a set of base filenames, for each name 'f' there are exactly two files, 'f.in' and 'f.out'. I want to write a batch file (in Windows XP) which goes through all the filenames, for each one it should:
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How to avoid reinstalling packages when building Docker image for Python projects?
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Try to build a Dockerfile which looks something like this:
FROM my/base
WORKDIR /srv
ADD ./requirements.txt /srv/requirements.txt
RUN pip install -r requirements.txt
ADD . /srv
RUN python setup.py install
ENTRYPOINT ["run_server"]
Docker will use cache during pip install as long as you do...
What is “loose coupling?” Please provide examples
... answered Oct 22 '08 at 18:35
64BitBob64BitBob
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Counter increment in Bash loop not working
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count=0
base=1
(( count += base ))
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You must enable the openssl extension to download files via https
... Where is this line? In which file? the php.ini in 1, C:\wamp64\bin\apache OR 2. C:\wamp64\bin\php\php7.0.0 ?
– MyDaftQuestions
Apr 3 '16 at 14:54
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JavaScript equivalent to printf/String.Format
...available. underscore.string has more features aside from sprintf which is based on sprintf() for JavaScript implementation. Other than that the library is an entirely different project.
– Maksymilian Majer
Apr 15 '14 at 7:41
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Creating an empty Pandas DataFrame, then filling it?
...C': 'xyz'}, ignore_index=True)
df.dtypes
A object # yuck!
B float64
C object
dtype: object
Dealing with object columns is never a good thing, because pandas cannot vectorize operations on those columns. You will need to do this to fix it:
df.infer_objects().dtypes
A int64
B fl...
Filtering Pandas DataFrames on dates
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If date column is the index, then use .loc for label based indexing or .iloc for positional indexing.
For example:
df.loc['2014-01-01':'2014-02-01']
See details here http://pandas.pydata.org/pandas-docs/stable/dsintro.html#indexing-selection
If the column is not the index ...
Lambda function in list comprehensions
...(map(lambda x: x*x, range(10))) will give you [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
– rrlamichhane
Jun 12 at 22:58
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