/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 vote134 views2 answers
Loading bar
Python
0 vote179 views1 answer
Corona data with python flask get pdf
Python Flask
1 vote146 views1 answer
, in <genexpr> if not all (key in json for key in transaction_keys): TypeError: argument of type 'NoneType' is not iterable
Python
3 votes178 views1 answer
Business logic in django
Python Django
1 vote130 views1 answer
Check setuptools version python
Python
0 vote129 views1 answer
Munshi premchand idgah
Python
0 vote144 views1 answer
Eia api python
Python
2 votes137 views3 answers
Python logger get level
Python
-1 vote133 views3 answers
Count string python
Python
0 vote132 views1 answer
Pillow rgb to grayscale
Python