嵌套循环三角形与python

Question

I need this nested loop to work and its simple

def triangle():
      print("Making a Triangle")
      base = 6
      while base > 0:
            print('0',0,base)
            base = base - 1
 triangle()

My current output is:

Making a Triangle
0 0 6
0 0 5
0 0 4
0 0 3
0 0 2
0 0 1

I need my output to look like this:

000000
00000
0000
000
00
0

Answer 1

You can use the multiplication * operator to create a string by repeating a character. Also, this would be a very straight forward application for a for loop.

def triangle(n):
    print('making a triangle')
    for zeroes in range(n):
        print('0' * (n-zeroes))

Testing

>>> triangle(6)
making a triangle
000000
00000
0000
000
00
0

Although if you'd like to stick with a while loop, you could do

def triangle(n):
    print('Making a triangle')
    while n > 0:
        print('0' * n)
        n -= 1

Answer 2

Cyber's answer is good, Here are some one liners:

>>> for i in ['0'*j for j in range(n,0,-1)]: print (i) # Old-Style
... 
000000
00000
0000
000
00
0

>>> print('\n'.join(['0'*i for i in range(n, 0, -1)])) # Thanks to Hannes Ovren
000000
00000
0000
000
00
0

>>> print('\n'.join('0'*i for i in range(n, 0, -1)))    # Using a generator expression
000000
00000
0000
000
00
0

>>> print '\n'.join([('0'*6)[:n-i] for i in range(n)])  # Little complicated
000000
00000
0000
000
00
0