/Python/Pandas slicing from one column to another

Pandas slicing from one column to another

# slice from 'foo' to 'cat' by every 2nd column
df.loc[:, 'foo':'cat':2]
# foo quz cat

# slice from the beginning to 'bar'
df.loc[:, :'bar']
# foo bar

# slice from 'quz' to the end by 3
df.loc[:, 'quz'::3]
# quz sat

# attempt from 'sat' to 'bar'
df.loc[:, 'sat':'bar']
# no columns returned

# slice from 'sat' to 'bar'
df.loc[:, 'sat':'bar':-1]
sat cat ant quz bar

# slice notation is syntatic sugar for the slice function
# slice from 'quz' to the end by 2 with slice function
df.loc[:, slice('quz',None, 2)]
# quz cat dat

# select specific columns with a list
# select columns foo, bar and dat
df.loc[:, ['foo','bar','dat']]
# foo bar dat

Source: stackoverflow.com

Python - row slice dataframe by number of rows

df.iloc[[1, 5]]                                               # Get rows 1 and 5
df.iloc[1:6]                                                  # Get rows 1 to 5 inclusive
df.iloc[[1, 5], df.columns.get_loc('Shop')]                   # Get only specific column
df.iloc[[1, 5], df.columns.get_indexer(['Shop', 'Category'])] # Get multiple columns

Source: stackoverflow.com

Similar codes

0 vote122 views1 answer
Import "dj_database_url" could not be resolved Pylance
Python
0 vote171 views1 answer
Flask send email gmail
Python Flask
0 vote91 views1 answer
From flask import flask app = flask(__name__) @app.route("/") def hello_world(): return "<p>hello, world!</p>"
Python
0 vote119 views1 answer
Python get cos sim
Python
2 votes135 views2 answers
Python greatest common divisor
Python
-2 votes124 views1 answer
How to add all values in a list python without using sum function
Python
8 votes137 views2 answers
Add empty column to dataframe pandas
Python
0 vote116 views1 answer
Json dumps indent
Python
0 vote133 views1 answer
Top automotive blogs
Python
0 vote131 views1 answer
Pandas filter dataframe if an elemnt is in alist
Python