/Python/Python sort dataframe by one column

Python sort dataframe by one column

Sort a dataframe by a column valuepython

>>> df.sort_values(by=['col1'])
    col1 col2 col3
0   A    2    0
1   A    1    1
2   B    9    9
5   C    4    3
4   D    7    2
3   NaN  8    4

Source: pandas.pydata.org

Df sort values

>>> df.sort_values(by=['col1'], ascending = False)
    col1 col2 col3
0   A    2    0
1   A    1    1
2   B    9    9
5   C    4    3
4   D    7    2
3   NaN  8    4

Source: pandas.pydata.org

Sorting by column in pandas

# Python, Pandas
# Sorting dataframe df on the values of a column col1

# Return sorted array without modifying the original one
df.sort_values(by=["col1"]) 

# Sort the original array permanently
df.sort_values(by=["col1"], inplace = True)

Sort by two columns in pandas

df.sort_values(['a', 'b'], ascending=[True, False])

Df.sort_values(by='col1',asending=True)

>>> df.sort_values(by='col1', ascending=False)
  col1  col2  col3 col4
4    D     7     2    e
5    C     4     3    F
2    B     9     9    c
0    A     2     0    a
1    A     1     1    B
3  NaN     8     4    D

Source: pandas.pydata.org

Python sort dataframe by one column

#following is example of sorting by the column "2" in descending order
final_df = df.sort_values(by=['2'], ascending=False)

Similar codes

1 vote185 views1 answer
Pycharm remove not in use imports
Python
16 votes192 views2 answers
What is self keyword in python
Python
3 votes222 views2 answers
Normal distribution
Python
0 vote190 views3 answers
Python compiler to c++
Python
1 vote190 views1 answer
Python not equal multiple values
Python
0 vote231 views1 answer
How to get csv file first row first column value in python
Python
1 vote196 views3 answers
Combination generator python
Python
0 vote216 views1 answer
Train_ttest_split()
Python
0 vote183 views1 answer
Make_interp_spline
Python
2 votes222 views1 answer
Dataframe shift python
Python