Making a rectangle using a given symbol w/ given height and width

user_17047945 0
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I'm trying to make a rectangle out of a given symbol with a specific given height and width. The first def function should contain only one parameter. This should be a higher-order function as well. This is my code so far:

def rectangle(x):
    def someName(width,height):
        i = x * width
        while len(i) <= height:
            print(i)
            i = i+1
    return someName

If entering something like this to test it, this is how it should print:

>>> percent = rectangle('%')
>>> dot = rectangle('.')
>>> print(percent(3,2))
%%%
%%%
>>> print(dot(4,1))
....

My code currently returns None. How do I get it to return i? If I change return someName to return i, many other errors occur.

higher-order-functions python
2 Answers

someName is printing the characters, so calling print from the outside is redundant. If you want someName to do the printing then change the calls to:

>>> percent(3,2)
>>> dot(4,1)

On the other hand, if you want caller to call print then you'll need to change someName to build up a string piece by piece and return it at the end, instead of doing the printing itself. For example:

def someName(width,height):
    i = x * width
    lines = []
    while len(i) <= height:
        lines.append(i)
        i = i+1
    return '\n'.join(lines)
user_685870

You can try to use the decorator function of python,like this：

def decorate(key):
    def real_decorate(func):
        def wrapper(width, height):
            return func(width * key, height)
        return wrapper
    return real_decorate


@decorate("%")
def rectangle(width, height):
    return [width for i in range(height)]


print("\n".join(rectangle(10, 5)))
user_168744660
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