Hello World ! My question is how to make a program in Python3 to print the following pattern :

Question

1
1 2
1 2 3
1 2 3 4
1 2 3 4 5

Answer 1

as a function which takes start and end paramaters and prints the triangle

def tri(start,end):
for x in range(start,end+1):
for y in range(start,x+1):
print(y,end=' ')
print()
tri(1,7)
tri(2,8)

Answer 2

for x in range(1,6):
for y in range(x):
print(y+1,end=' ')
print() # for line drop

tho i am sure there is a more stylish code for this task...

Answer 3

also this is possible

print_range=lambda x:print(*x)
for x in range(1,6):
print_range([y for y in range(1,x+1)])