PYTHON

python looping over a list

# a 'while' loop runs until the condition is broken
a = "apple"
while a == "apple":
  a = "banana" # breaks loop as 'a' no longer equals 'apple'
  
# a 'for' loop runs for the given number of iterations...
for i in range(10):
  print(i) # will print 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

# ... or through a sequence
array = [3, 6, 8, 2, 1]
for number in array:
  print(number) # will print 3, 6, 8, 2, 1

python loop over list

list = [1, 3, 6, 9, 12]
for i in list: 
    print(i) 

python for loop inside list

myList = []
for i in range(10):
    myList.append(i)
    
# is equivalent to

myList = [i for i in range(10)]