In Python, is it better to use list comprehensions or for-each loops?

Question

Which of the following is better to use and why?

Method 1:

for k, v in os.environ.items():
       print \"%s=%s\" % (k, v)

Method 2

Answer 1

I find the first example better - less verbose, clearer and more readable.

In my opinion, go with what best gets your intention across, after all:

Programs should be written for people to read, and only incidentally for machines to execute.

-- from "Structure and Interpretation of Computer Programs" by Abelson and Sussman

By the way, since you're just starting to learn Python, start learning the new String Formatting syntax right away:

for k, v in os.environ.items():
    print "{0}={1}".format(k, v)