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How-to articles, tricks, and solutions about PYTHON

Matplotlib make tick labels font size smaller

Here is a code snippet that shows how to make the tick labels font size smaller in Matplotlib:

python matplotlib

"pip install unroll": "python setup.py egg_info" failed with error code 1

Here is an example of a command that could cause the error you described:

python package installation pip

Converting a Pandas GroupBy output from Series to DataFrame

Here is an example code snippet that demonstrates how to convert the output of a Pandas GroupBy operation from a Series to a DataFrame:

python pandas dataframe pandas-groupby multi-index

Unicode (UTF-8) reading and writing to files in Python

To read a file in Unicode (UTF-8) encoding in Python, you can use the built-in open() function, specifying the encoding as "utf-8".

UTF-8 python io unicode

How to set the current working directory?

You can set the current working directory in Python using the os module, specifically the chdir() function.

python working-directory

Unzipping files in Python

Here is a code snippet that demonstrates how to unzip a file using the zipfile module in Python:

python zip unzip python-zipfile

Python list of dictionaries search

Here is a code snippet that demonstrates how to search for a specific value in a list of dictionaries in Python:

python dictionary search

What can I do about "ImportError: Cannot import name X" or "AttributeError: ... (most likely due to a circular import)"?

This error typically occurs when there is a circular import between two or more modules.

python importerror python-import circular-dependency

When to use cla(), clf() or close() for clearing a plot in matplotlib?

cla() is used to clear the current axis of a plot in matplotlib.

python matplotlib plot

How do I use raw_input in Python 3?

In Python 3, the input() function can be used in place of raw_input() to read input from the user.

python python-3.x