Loop Through Lists

Loop Through Lists

There are several ways to visit every item in a list.

For loop with in

The simplest way:

thislist = ["apple", "banana", "cherry"]
for x in thislist:
    print(x)

Loop by index

for i in range(len(thislist)):
    print(thislist[i])

While loop

i = 0
while i < len(thislist):
    print(thislist[i])
    i += 1

List comprehension (compact)

[print(x) for x in thislist]

This is the fastest and shortest way, and it's very common in real Python code.

Loop with index using enumerate

for i, x in enumerate(thislist):
    print(i, x)

TL;DR

• for x in lst is the cleanest loop.
• range(len(lst)) loops by index.
• List comprehension can print in one line.
• enumerate gives index and item together.