/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 vote183 views1 answer
True false array to black and white
Python
67 votes198 views6 answers
Open file python
Python
0 vote125 views1 answer
Index is datetime and i want the row number
Python
47 votes161 views3 answers
Convert to string in python
Python
2 votes170 views1 answer
How to create a window in pygame
Python
0 vote185 views2 answers
Import static
Python
42 votes181 views6 answers
Create requirements.txt python
Python
7 votes184 views3 answers
Pandas empty dataframe with column names
Python
0 vote191 views1 answer
How to add column to heroku postgres in my django app
Python Django
-1 vote189 views1 answer
AttributeError: 'FacetGrid' object has no attribute 'suptitle'
Python