multiply column of dataframe by number
#Multiply the values of column_name by 100
df.column_name.mul(100)multiply column of dataframe by number
#Multiply the values of column_name by 100
df.column_name.mul(100)python multiply one column of array by a value
import numpy as np
# Let a be some 2d array; here we just use dummy data
# to illustrate the method
a = np.ones((10,5))
# Multiply just the 2nd column by 5.2 in-place
a[:,1] *= 5.2
# Now get the cumulative sum of just that column
csum = np.cumsum(a[:,1])Copyright © 2021 Codeinu
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