PYTHON

range python

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

how to make your own range function in python

# subcribe to my channel 
# https://www.youtube.com/channel/UCakNP54ab_3Qm8MPdlG4Zag
def own_range(start=0, end=0, step=1):
	if step == 0:
		raise ValueError("own_range() arg 3 must be not zero")
	if start > end and step < 0:
		while start > end:
			yield start 
			start += step
	elif start > end or (start != 0 or end == 0) and start != 0 and end == 0:
		while end < start:
			yield end
			end += step
	elif start == 0 and end != 0 and end > 0 and step > 0 or (start != 0 or end == 0) and start != 0 and start < end and step > 0:
		while start < end:
			yield start
			start += step

making your own range function in python

# plz suscribe to my youtube channel -->
# https://www.youtube.com/channel/UC-sfqidn2fKZslHWnm5qe-A

def range_by(starting_number, ending_number):
    #sequence = [starting_number]
    sequence = []
    while starting_number < ending_number:
        sequence.append(starting_number)
        starting_number += 1
        
    return sequence

print(range_by(-3,6))

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

range py

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

range in python

range(inclusive, exclusive)
range(0, 3) # 0, 1, 2

range in python

range(start:optional, stop:required, step:optional) 
A built-in python function to create a sequence of integers.
range(10) #[0 to 9]
range[2,9] #start 2 and stop 10
print(list(range(10))) #change create range object into list.
range(1,100,10) 

python range

range(1, 100) # --> prints 1 through 99 numbers

range(n,n) python

# if numbers are same in the range function then,
# the range function outputs empty range
# this is because, there are no integers b/w n and n
for i in range(1,1):
  print("runs")

# prints nothing
 

range() in python

Below is the syntax of the range() function. range(start, stop[, step])

range parameters python

arr_data=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20] 
user = int(input("Enter the product of numbers: ")) 
for i in range(0,20,1): 
    a = arr_data[i] 
    for t in range(0,20,1): 
        b = arr_data[t] 
        if (a*b) == user: 
            print(a,"x",b,"=",user) 
        else: 
            pass 

the range() function

>>> for i in range(5):
...     print(i)
...
0
1
2
3
4

when do we use *range in python

print([*range(20)]) #will give all numbers 1 to 19 in a list

python range function examples

>>> list(range(10))
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> list(range(1, 11))
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> list(range(0, 30, 5))
[0, 5, 10, 15, 20, 25]
>>> list(range(0, 10, 3))
[0, 3, 6, 9]
>>> list(range(0, -10, -1))
[0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
>>> list(range(0))
[]
>>> list(range(1, 0))
[]