pandas dataframe get columns by index code example

Example 1: pandas select column by index

#    A  B  C
# 0  1  3  5
# 1  2  4  6

column_B = a_dataframe.iloc[:, 1]
print(column_B)

# OUTPUT
# 0    3
# 1    4

Example 2: pandas column by index

DataFrame.iloc[:, n]