Example of how to print a diamond, triangle, and rectangle using python.

Example of how to print a diamond, triangle, and rectangle using python.

Preface

This article describes how to use python to print out Diamond, triangle, and rectangle. Let's share the content for your reference. If you don't talk about it, let's take a look at the details:

Instance code

# Coding: utf-8rows = int (raw_input ('number of input columns: ') I = j = k = 1 # declare variable, I used to control the outer loop (number of rows in the graph ), j is used to control the number of spaces, k is used to control the number of * # isosceles right triangle 1 print "isosceles right triangle 1" for I in range (0, rows ): for k in range (0, rows-I): print "*", # note that "," must not be omitted, can play the role of not wrapping k + = 1 I + = 1 print "\ n" # print solid equilateral triangle print "print hollow equilateral triangle, here we remove the if-else condition judgment as solid "for I in range (0, rows + 1): # variable I control the number of rows for j in range (0, rows-I ): # (1, rows-I) print "", j + = 1 for k in rang E (0, 2 * I-1): # (1, 2 * I) if k = 0 or k = 2 * I-2 or I = rows: if I = rows: if k % 2 = 0: # because the first number starts from 0, print * for an even number and print "*" for an odd number, else: print "", # note that "," must not be omitted. else: print "*", else: print "", k + = 1 print "\ n" I + = 1 # print diamond print "print hollow diamond, here we remove the if-else condition judgment as solid "for I in range (rows): # variable I controls the number of rows for j in range (rows-I): # (1, rows-I) print "", j + = 1 for k in range (2 * I-1): # (1, 2 * I) If k = 0 or k = 2 * I-2: print "*", else: print "", k + = 1 print "\ n" I + = 1 # lower half of the diamond for I in range (rows): for j in range (I): # (1, rows-I) print "", j + = 1 for k in range (2 * (rows-I)-1): # (1, 2 * I) if k = 0 or k = 2 * (rows-I)-2: print "*", else: print "", k + = 1 print "\ n" I + = 1 # solid square print "solid square" for I in range (0, rows): for k in range (0, rows): print "*", # note that "," must not be omitted. Line feed function k + = 1 I + = 1 print "\ n" # hollow square print "Hollow Square" for I in range (0, rows ): for k in range (0, rows): if I! = 0 and I! = Rows-1: if k = 0 or k = rows-1: # because the visual effect looks more like a square, spaces are added on both sides, increase the distance from print "*", # note that "," must not be omitted. else: print "can be used to avoid line breaks.", # There are three spaces in else: print "*", # Here * Space k + = 1 I + = 1 print "\ n" is added on both sides"

Execution output result:

Number of input columns: 4 isosceles right triangle 1 ********* print hollow equilateral triangle, here, the if-else condition judgment is removed as a solid ********* to print hollow diamond, here, the if-else condition is removed and the result is a solid **************** hollow Square ************

Summary

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