diff options
Diffstat (limited to 'python.html.markdown')
| -rw-r--r-- | python.html.markdown | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/python.html.markdown b/python.html.markdown index 88e0deb1..5572e38e 100644 --- a/python.html.markdown +++ b/python.html.markdown @@ -198,7 +198,7 @@ li[::-1] # => [3, 4, 2, 1] # Remove arbitrary elements from a list with "del" del li[2] # li is now [1, 2, 3] -r + # You can add lists li + other_li # => [1, 2, 3, 4, 5, 6] # Note: values for li and for other_li are not modified. @@ -379,7 +379,13 @@ except (TypeError, NameError): pass # Multiple exceptions can be handled together, if required. else: # Optional clause to the try/except block. Must follow all except blocks print "All good!" # Runs only if the code in try raises no exceptions +finally: # Execute under all circumstances + print "We can clean up resources here" +# Instead of try/finally to cleanup resources you can use a with statement +with open("myfile.txt") as f: + for line in f: + print line #################################################### ## 4. Functions @@ -406,7 +412,7 @@ varargs(1, 2, 3) # => (1, 2, 3) # You can define functions that take a variable number of -# keyword args, as well, which will be interpreted as a map if you do not use ** +# keyword args, as well, which will be interpreted as a dict if you do not use ** def keyword_args(**kwargs): return kwargs |