def righttriangle(z):

nums = [str(i) for i in range(1,z+1)]

for x in range(1, z+1):

print(' '.join(nums[0:x]))

return ''

def isoscelestriangle(x):

nums = [str(i) for i in range(1, 2*x)]

for a in range(x):

num = ''.join(nums[0:((2*a) + 1)])

numspaces = (x - 1 - a)

print(' '*numspaces + num)

return ''

def kite(x):

nums = [str(i) for i in range(1, 2*x)]

for a in range(x):

num = ''.join(nums[0:((2*a) + 1)])

numspaces = (x - 1 - a)

print(' '*numspaces + num)

for b in range(x-1):

c = (2*b) + 2

num = ''.join(nums[0:(len(nums) - c)])

numspaces = int((len(nums) - len(str(num)))/2)

print(' '*numspaces + num)

return ''

def halfkite(z):

nums = [str(i) for i in range(1,z+1)]

for x in range(1, z+1):

print(' '.join(nums[0:x]))

for y in range(1,z):

print(' '.join(nums[0:(len(nums) - y)]))

return ''

def X(z):

nums = [str(i) for i in range(1, 2*z)]

for a in range(z):

num = ''.join(nums[0:(len(nums) - 2*a)])

numspaces = int((len(nums) - len(num))/2)

print(' '*numspaces + num)

for b in range(1, z):

num = ''.join(nums[0:(2*b + 1)])

numspaces = int((len(nums) - len(str(num)))/2)

print(' '*numspaces + num)

return ''

question = ''

while question != 'Exit':

print("""

==========MENU==========

1. Right-angled triangle

2. Isosceles triangle

3. Kite

4. Half Kite

5. X

6. Exit

========================

""")

question = input('Enter the name of the pattern from the above menu that you want to print: ')

if question == 'Right-angled triangle':

n = int(input('Enter the number of lines that you want to print: '))

print('\n')

print(righttriangle(n))

if question == 'Isosceles triangle':

n = int(input('Enter the number of lines that you want to print: '))

if n%2 == 0:

print('\n')

print(isoscelestriangle(n))

else:

print('Enter an even number of lines.')

if question == 'Kite':

n = int(input('Enter the number of lines that you want to print (enter an even number of lines): '))

if n%2 == 0:

print('\n')

print(kite(n))

else:

print('Enter an even number of lines.')

if question == 'Half Kite':

n = int(input('Enter the number of lines that you want to print: '))

print('\n')

print(halfkite(n))

if question == 'X':

n = int(input('Enter the number of lines that you want to print: '))

if n%2 == 0:

print('\n')

print(X(n))

else:

print('Enter an even number of lines.')

if question == 'Exit':

print('\n')

break