how to set columns in pandas code example

Example 1: python how to rename columns in pandas dataframe

# Basic syntax:
# Assign column names to a Pandas dataframe:
pandas_dataframe.columns = ['list', 'of', 'column', 'names']
# Note, the list of column names must equal the number of columns in the
# 	dataframe and order matters

# Rename specific column names of a Pandas dataframe:
pandas_dataframe.rename(columns={'column_name_to_change':'new_name'})
# Note, with this approach, you can specify just the names you want to
# 	change and the order doesn't matter

# For rows, use "index". E.g.:
pandas_dataframe.index = ['list', 'of', 'row', 'names']
pandas_dataframe.rename(index={'row_name_to_change':'new_name'})

Example 2: renaming headers pandasd

df = df.rename(columns={"old_col1": "new_col1", "old_col2": "new_col2"})

Example 3: how to change the columns of a dataframe in python

new_columns = {"col1": "1st", "col2": "2nd"}
df_new = df.rename(columns=new_columns)

"""
 col1 | col2 | col3            1st | 2nd | col3
   a  |   d  |	 g              a  |  d  |  g
   b  |   e  |   h		=>      b  |  e  |  h
   c  |   f  |   i              c  |  f  |  i
"""

Example 4: dataframe change column names

#Pandas for Python

df.coloumns = ['A','B']