python slice substring code example

Example 1: python slice string

name = "dx4iot"
print(name[0:]) #output: dx4iot
print(name[0:3]) #output: dx4
#==== reverse a string ====#
print(name[::-1]) #output: toi4xd
print(name[0:6:2]) #output: d4o
print(name[-4:-1]) #output: 4io

Example 2: python slice

# array[start:stop:step]

# start = include everything STARTING AT this idx (inclusive)
# stop = include everything BEFORE this idx (exclusive)
# step = (can be ommitted) difference between each idx in the sequence

arr = ['a', 'b', 'c', 'd', 'e']

arr[2:] => ['c', 'd', 'e']

arr[:4] => ['a', 'b', 'c', 'd']

arr[2:4] => ['c', 'd']

arr[0:5:2] => ['a', 'c', 'e']

arr[:] => makes copy of arr