How to use python variable in os.system?

Question

I am creating small console script in python, and I will like to put cowsay command in it, but cow says name of the variable, where the string is, not the string inside the

Answer 1

You could use format to construct the string

os.system('cowsay {}'.format(word))

Or simple string concatenation

os.system('cowsay ' + word)

But I prefer the former, especially if the string get more complicated.