range syntax in python code example
Example 1: python range
# 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])
Example 2: range py
range(start, stop, step)
x = range(0,6)
for n in x:
print(n)
>0
>1
>2
>3
>4
>5
Example 3: when do we use *range in python
print([*range(20)]) #will give all numbers 1 to 19 in a list
Example 4: in range python
for i in range(x) :
#code
Example 5: range() python
#can be used a sequence of numbers
x = range(6)
print(x)
#Outputs 0 1 2 3 4 5
for i in range(start,finish ,step)
#gives range of numbers
#start is optional default is 0
#finish needed specifying when to stop
#step is incremetntaition of jump also optional