如何优化模式并删除输出中的括号？

Question

I am trying to write a function that prints a diagonal pattern. The arguments to this are:

1. The number of columns (stars) in each line
2. The number of lines
3. The length of the gap between two consecutive stars on each line.

This is what I have tried:

def pattern(s, r, g):
    for i in range(r):
        print(" " * g, ("*", " " * g) * s, end="\n")

But the output looks like this: for pattern(2,3,4) where 2 is the number of stars in each row, 3 is the number of rows and 4 is the number of gaps between the stars

('*', '    ', '*', '    ')
('*', '    ', '*', '    ')
('*', '    ', '*', '    ')

How can I execute this without the brackets?

Answer 1

You are printing out tuples. You need to unpack tuple using * operator:

def pattern(s, r, g):
    for i in range (r):
        print(' ' * g, *('*', ' ' * g) * s, end='\n')

pattern(2, 3, 4)

Output :

     *      *
     *      *                                                    
     *      *                                            

Answer 2

You can add one more loop

    for i in range (r):
        for j in range(s):
            print('*', ' '*g, end='')
        print('\n')

pattern(3,5,8)

Output :

*         *         *         

*         *         *         

*         *         *         

*         *         *         

*         *         *

Answer 3

Alternatively to printing out tuples / expanding the tuples, you could simply print a string built by concatenating the different string parts using + , eg

def pattern(s, r, g):
    for i in range(r):
        print(" " * g + ("*" + " " * g) * s, end="\n")


pattern(2, 3, 4)

Output:

     *      *
     *      *                                                    
     *      * 

Note that end="\\n" is superfluous here, and there seems to be no diagonal pattern.