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Expanding Environment variable in string using python

I have a string containing an environment variable, e.g.

my_path = '$HOME/dir/dir2'

I want parse the string, looking up the variable and replacing it in the string:

print "HOME =",os.environ['HOME']
my_expanded_path = parse_string(my_path)
print "PATH =", my_expanded_path

So I should see the output:

HOME = /home/user1

PATH = /home/user1/dir/dir2

Is there an elegant way to do that in Python?

Solution

  • Use : os.path.expandvars