I introduced myself in the programming world using very basic languages. Since 4 years ago, I created many many projects using Python, but although the Python Zen says "There should be one-- and preferably only one --obvious way to do it.", some things aren't obvious.

One line conditionals.

My old code has too redundant code, specially with conditionals:

if x < 56:
    some = "Dafaq"
else:
    some = "Nope"

Nothing simpler than putting:

some = "Dafaq" if x < 56 else "Nope"

One line filtering lists.

One of the most common situations in Python is "filtering" lists. My old way:

a = [2, 24, 88, 32, 1, 6, 88, 10, 15, 34] # example list.
b = []
for i in a:
    if i >= 15:
        b.append(i)

Best way:

a = [2, 24, 88, 32, 1, 6, 88, 10, 15, 34] # example list.
b = [i for i in a if i >= 15]

One line sum list values.

Other of the most common things is to sum up the values of a list. My old way:

amounts = [2, 24, 88, 32, 1, 6, 88, 10, 15, 34] # example list.
total = 0
for i in amounts:
    total += i

Best way:

amounts = [2, 24, 88, 32, 1, 6, 88, 10, 15, 34]
total = sum(amounts)

In the next chapter...

Things that weren't so obvious when you starting to using Django...