range py

range(start, stop, step)
 
x = range(6)
for n in x:
print(n)
> 0
>1
>2
>3
>4
>5

# range(start, stop, step)
  # start = (can be ommitted) index to begin at (INCLUSIVE)
  # stop = generate numbers up to, but not including this number (EXCLUSIVE)
  # step = (can be omitted) difference between each number in the sequence

# idx:  0	1	2	3 	4
# arr:  19	5	3	22	13
  
arr = [19,5,3,22,13]

# range(stop)
for i in range(len(arr)):
    print(arr[i]) # prints: 19, 5, 3, 22, 13

# range(start, stop)
for i in range(2, len(arr)):
    print(arr[i]) # prints: 3, 22, 13
    
# range(start, stop, step)
for i in range(0, len(arr), 2):
    print(arr[i]) # prints: 19, 3, 13
    
# reverse:
for i in range(len(arr)-1, -1, -1):
    print(arr[i])

# Python program to concatenate 
# the result of two range functions  
from itertools import chain 
# Using chain method 
print("Concatenating the result") 
res = chain(range(5), range(10, 20, 2)) 
  
for i in res: 
    print(i, end=" ") 

x = range(6)
for n in x:
  print(n) 

range(start, stop, step)
 
x = range(0,6)
for n in x:
print(n)
>0
>1
>2
>3
>4
>5

for i in range(start, end):
  expression