Most pythonic way to convert a string to a octal number

Question

I am looking to change permissions on a file with the file mask stored in a configuration file. Since os.chmod() requires an octal number, I need to convert a string to an o

Answer 1

Have you just tried specifying base 8 to int:

num = int(your_str, 8)

Example:

s = '644'
i = int(s, 8) # 420 decimal
print i == 0644 # True