Python file modes detail

Question

In Python, the following statements do not work:

f = open(\"ftmp\", \"rw\")
print >> f, \"python\"

I get the error:

Trace         


        

Answer 1

Better yet, let the documentation do it for you: http://docs.python.org/library/functions.html#open. Your issue in the question is that there is no "rw" mode... you probably want 'r+' as you wrote (or 'a+' if the file does not yet exist).