Generate a random number for each row dependent on another column Pandas DataFrame

Let it be the following Dataframe of pandas in Python.

Column_1	Column_2	Number
UDKA	1234	5
MAKU	1544	5
POKA	5434	2
UJFK	9104	3

I want to generate a random number column that generates for each row a random number between 1 and its value in the Number column df['Random'] = rand(1, x.Number). Example result:

Column_1	Column_2	Number	Random
UDKA	1234	5	4
MAKU	1544	5	2
POKA	5434	2	1
UJFK	9104	3	2

Obviously Random cannot be strictly greater than Number.