CODEWITHSUNDEEP
pythonpython-3.x
Adam Grey
Adam Grey

Reputation: 95

Using end= parameter in loop (Python)

My desired output is two half pyramids separated by two spaces.

length = int(input("Enter size of pyramid."))
hashes = 2
for i in range(0, length):
    spaces = length - (i+1)
    hashes = 2+i
    print("", end=" "*spaces)
    print("#", end=" "*hashes)
    print("  ", end="")
    print("#" * hashes)

However, this ends up printing only the first hashes of each row on the left pyramid. If I get rid of the end= in line 7, the pyramids are both printed correctly, but with newlines after each row. Here are the outputs:

With end=:

   #    ##
  #     ###
 #      ####
#       #####

Without end=:

   ##
  ##
  ###
  ###
 ####
  ####
#####
  #####

All I want now is to have the second output, but without the newlines.

Upvotes: 0

Views: 605

Answers (3)

Milan
Milan

Reputation: 667

Try this algorithm:

length = int(input("Enter size of pyramid."))
# Build left side, then rotate and print all in one line
for i in range(0, length):
    spaces = [" "] * (length - i - 1)
    hashes = ["#"] * (1 + i)
    builder = spaces + hashes + [" "]
    line = ''.join(builder) + ''.join(builder[::-1])
    print(line)

Upvotes: 1

John Gordon
John Gordon

Reputation: 33275

You're multiplying the end parameter by the number of hashes, instead of multiplying the main text portion.

Try this modification:

length = int(input("Enter size of pyramid."))
hashes = 2
for i in range(0, length):
    spaces = length - (i+1)
    hashes = 2+i
    print(" " * spaces, end="")
    print("#" * hashes, end="")
    print("  ", end="")
    print("#" * hashes)

Upvotes: 1

Josh Weinstein
Josh Weinstein

Reputation: 2968

The most straightforward way to print any output you want without newlines is to uses sys.stdout.write. This writes a string to the stdout without appending a new line.

>>> import sys
>>> sys.stdout.write("foo")
foo>>> sys.stdout.flush()
>>>

As you can see above, "foo" is written with no newline.

Upvotes: 2

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