Read line containing variables from file

Question

I need to read the row like:

"hello %" % name 

from a file and then use it in the code. For eg:

name = "Joe"
row = open("hello.txt", "r").readline().strip()
print row

And desired result of run of this program should be :

hello Joe

and not

hello %" % name 

Are there any means to accomplish it?

Answer 1

Replace the sub-string with the variable.

name = "Joe"
row = open("hello.txt", "r").readline().strip()
row = row.replace('%" % name', name)
print row

Output:

hello Joe