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TypeError: got multiple values for argument
I read the other threads that had to do with this error and it seems that my problem has an interesting distinct difference than all the posts I read so far, namely, all the other posts so far have the error in regards to either a user created class or a builtin system resource. I am experiencing th...
Count character occurrences in a string in C++
...rns type iterator_traits<InputIt>::difference_type, which for most standard containers is std::ptrdiff_t, not std::size_t.
– Daniel Stevens
Apr 15 at 7:48
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Relationship between SciPy and NumPy
...numpy as _num
from numpy import oldnumeric
from numpy import *
from numpy.random import rand, randn
from numpy.fft import fft, ifft
from numpy.lib.scimath import *
The log10 function you get in scipy comes from numpy.lib.scimath. Looking at that code, it says:
"""
Wrapper functions to more user-f...
Django 1.7 - makemigrations not detecting changes
...ion does not make it obvious that you need to add the app label to the command, as the first thing it tells you to do is python manage.py makemigrations which will fail. The initial migration is done when you create your app in version 1.7, but if you came from 1.6 it wouldn't have been carried out....
Where do the Python unit tests go?
...the code directory).
I prefer #1 for its simplicity of finding the tests and importing them. Whatever build system you're using can easily be configured to run files starting with test_. Actually, the default unittest pattern used for test discovery is test*.py.
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Get a filtered list of files in a directory
...noticed that the Python docs say glob() "is done by using the os.listdir() and fnmatch.fnmatch() functions in concert, and not by actually invoking a subshell". In other words, glob() doesn't have the efficiency improvements one might expect.
– Ben Hoyt
Feb 11 ...
How do you validate a URL with a regular expression in Python?
I'm building an app on Google App Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.
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How to apply a function to two columns of Pandas dataframe
Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function :
12 Answers
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What does $_ mean in PowerShell?
...he current value in the pipe line, which is called $PSItem in Powershell 3 and newer.
1,2,3 | %{ write-host $_ }
or
1,2,3 | %{ write-host $PSItem }
For example in the above code the %{} block is called for every value in the array. The $_ or $PSItem variable will contain the current value...
Is errno thread-safe?
...l
errno is defined by including the
header , as specified by the
C Standard ... For each thread of a
process, the value of errno shall not
be affected by function calls or
assignments to errno by other threads.
Also see http://linux.die.net/man/3/errno
errno is thread-local; settin...