range 28 29 python

1for i in range([start], stop[, step])

1# range(start, stop, step)
2  # start = index to begin at (INCLUSIVE)
3  # stop = generate numbers up to, but not including this number (EXCLUSIVE)
4  # step = (can be omitted) difference between each number in the sequence
5
6arr = [19,5,3,22,13]
7
8# range(stop)
9for i in range(len(arr)):
10    print(arr[i]) # prints: 19, 5, 3, 22, 13
11
12# range(start, stop)
13for i in range(2, len(arr)):
14    print(arr[i]) # prints: 3, 22, 13
15    
16# range(start, stop, step)
17for i in range(0, len(arr), 2):
18    print(arr[i]) # prints: 19, 3, 13
19    
20# reverse:
21for i in range(len(arr)-1, -1, -1):
22    print(arr[i])
23

1num1= = 100
2num2 = 904574
3range_between_num1_and_num2 = num2 - num1
4

1range(4)        # [0, 1, 2, 3] 0 through 4, excluding 4
2range(1, 4)     # [1, 2, 3] 1 through 4, excluding 4
3range(1, 10, 2) # [1, 3, 5, 7, 9] 1 through 10, counting by 2s
4

1# range(start, stop, step)
2  # start = (can be ommitted) index to begin at (INCLUSIVE)
3  # stop = generate numbers up to, but not including this number (EXCLUSIVE)
4  # step = (can be omitted) difference between each number in the sequence
5
6# idx:  0	1	2	3 	4
7# arr:  19	5	3	22	13
8  
9arr = [19,5,3,22,13]
10
11# range(stop)
12for i in range(len(arr)):
13    print(arr[i]) # prints: 19, 5, 3, 22, 13
14
15# range(start, stop)
16for i in range(2, len(arr)):
17    print(arr[i]) # prints: 3, 22, 13
18    
19# range(start, stop, step)
20for i in range(0, len(arr), 2):
21    print(arr[i]) # prints: 19, 3, 13
22    
23# reverse:
24for i in range(len(arr)-1, -1, -1):
25    print(arr[i])

1#can be used a sequence of numbers
2x = range(6)
3print(x)
4#Outputs 0 1 2 3 4 5
5
6for i in range(start,finish ,step) 
7#gives range of numbers
8#start is optional default is 0
9#finish needed specifying when to stop
10#step is incremetntaition of jump also optional