python pandas replacing strings in dataframe with numbers

Question

Is there anyway to use the mapping function or something better to replace values in an entire dataframe?

I only know how to perform the mapping on series.

I

Answer 1

The simplest way to replace any value in the dataframe:

df=df.replace(to_replace="set",value="1")
df=df.replace(to_replace="test",value="2")

Hope this will help.