how to find max value of a column in pandas code example

Example 1: minimum and max value in all columns pandas

#for multiple columns 
min_vals = df[["A","B","C"]].min() #can add how much ever columns
max_vals = df[["D","E","F"]].max() #can add how much ever columns

#for single column
min_val = df["Column"].min() 
max_val = df["Column"].max() 

#to refer to all columns
min_val = df[:].min() 
max_val = df[:].max()

Example 2: find max in a dataframe

max_value = df.to_numpy().max()