* triangle pattern using Python

# create a triangle pattern using * character
# take input from user for max lines to print
# number of * per line should be equal to the line number.

# By default in python 3 input is in string type, we need a integer
r = int(input("Enter max range:"))

for i in range (r+1):
    print ( '* ' * i )

that's it.
save the file e.g. startriangle.py

output:
dev@example.net:/home/dev$python3 startriangle.py
Enter max range: 5

*
* *
* * *
* * * *
* * * * *
dev@example.net:/home/dev$