Run
import pandas as pd import numpy as np #initialize a dataframe df = pd.DataFrame( [['21', '72', '67'], ['23', '78', '62'], ['32', '74', '54'], ['52', '54', '76']], columns=['a', 'b', 'c']) print('Previous Datatypes\n', df.dtypes, sep='') #change datatype of all columns df = df.apply(pd.to_numeric) #print results print('\nNew Datatypes\n', df.dtypes, sep='') print('\nDataFrame\n', df, sep='')
Output