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Top Python How-To Questions
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
Make a flat list out of a list of lists.
python
list
multidimensional-array
flatten
Accesses the index in for loops.
python
list
loops
Execute a program or call a system command.
subprocess
python shell
terminal
command
Convert a dictionary into a list.
python
convert dictionary to list
Top Python What Questions
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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