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Top Python How-To Questions
Prettyprint a JSON file.
python
prettyprint
json file
Create a dictionary with list comprehension.
python
dictionary
list comprehension
Select multiple columns in a Pandas dataframe.
python
pandas
column
select multiple
Convert two lists into a dictionary.
python
convert
list-to-dictonary
Extract extension from filename.
python
filenames
file-extension
Read from stdin (standard input).
python
stdin
read
Delete a column from a Pandas DataFrame.
pandas
dataframe
column
delete
Delete an element from a dictionary.
python
dictionary
delete element
Count the occurrences of an item in a list.
python
list
count
Remove an element from a list by index.
python
list
indexing
Determine the type of an object.
python
list
types
tuple
str
dict
int
Select an item from a list randomly.
python
list
random
Read a file line-by-line into a list.
python
string
file
readlines
Call a function of a module by using its name.
python
object
function-call
Get the number of elements in a list.
python
list
len
count
Sort a list of dictionaries by a value of the dictionary.
python
list
dictionary
sorting
data-structures
Remove a key from dictionary.
python
dictionary
data-structures
unset
Rename column names with Pandas.
python
dataframe
pandas replace
rename
Upgrade all Python packages with pip.
python
pip
upgrade
Get the last element of a list.
python
list-indexing
Convert a string into datetime format.
python
datetime
convert
Print coloured text on the terminal.
python
output
terminal
ansi-colors
Split a list into evenly sized parts.
python
list
split
chunks
Select rows from a DataFrame based on column values with Pandas.
python
pandas
dataframe
Iterate over rows in a DataFrame for Pandas.
python
pandas
dataframe
Concatenate two lists.
python
list
concatenation
Check if a list is empty.
python
list
List all files of a directory.
python
directory
list files
Find the index of an item in a list.
python
list
indexing
Understand how slice notation works.
python
slice
list
iterable
Top Python What Questions
What is the Python 3 equivalent of “python -m SimpleHTTPServer”
python3
python -m SimpleHTTPServer
Why do Python classes inherit 'object'
python
inheritance
object-class
What is the difference between venv, pyvenv, pyenv, virtualenv, virtualenvwrapper, pipenv?
python
venv
virtualenv
pipenv
What ipython
pyenv
virtualenvwrapper
pyvenv
What is the meaning of single and double underscore before an object name?
python
double-underscore
single-underscore
What is the proper way to declare custom exceptions in modern Python?
python
custom-exeptions
declare
What can I use as a replacement for the switch statement in Python?
python
replace
switch statement
How to add an existing venv virtual environment in PyCharm
venv
pycharm
What to do to import files from a different folder in python
python
python-import
importerror
Why is reading lines from stdin much slower in C++ than Python?
python
readlines
c++
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
parameter-passing
python syntax
argument-unpacking
variadic-functions
What is __init__.py used for?
python
module
package
python-packaging
Python Classes and OOP Explained
oop
object oriented programming
classes
Should I use a for-loop or a list comprehension in Python?
python
list comprehension
comparing
for-loop
faster
What is the difference between a staticmethod and a classmethod in Python?
python
classmethod vs staticmethod
static method
instance method
class method
What does "yield" do in a Python function?
python
yield
generator
What is if __name__ == "__main__" in Python?
python
__main__
__name__==
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