I was trying to draw a square using asterisks but this code was not working This is the code
def drawStar[numStars]:
for x in range[0,numStars]:
print["* "]
def menu[]:
# prompting the user to pick what they want drawn
input["Welcome to my draw shapes program "]
print["What would you like me to draw"]
input[" Draw a Square [1]\n Draw a Rectangle [2]\n Draw a Rectangle [2]\n Draw an Arrow Head [3]\n Exit [4]"]
def drawSquare[]:
width = int[input["What is the width of your square "]]
for x in range[0,width]:
drawStar[width]
drawSquare[]
This is the output i kept getting
What is the width of your square 2
*
*
None
*
*
None
dsh
11.8k3 gold badges30 silver badges51 bronze badges
asked Jan 27, 2017 at 15:17
1
Rectangle:
m, n = 10, 10
for i in range[m]:
for j in range[n]:
print['*' if i in [0, n-1] or j in [0, m-1] else ' ', end='']
print[]
Triangle:
m, n = 10, 10
for i in range[m]:
for j in range[n]:
print['*' if i in [j, m-1] or j == 0 else ' ', end='']
print[]
answered Jan 27, 2017 at 15:31
MaddyMaddy
1,9704 gold badges24 silver badges57 bronze badges
1
print["* "]
The
print[] function by default prints a newline character after the data you provide. That is why you see each asterisk [and space] on a separate line. The print[] function accepts a keyword argument named end to specify something else to print at the end.
You probably want something like this:
def drawStar[numStars]:
for x in range[0,numStars]:
print["* ", end='']
print[]
or alternatively, you can use the feature of python that strings can be multiplied by a number:
def drawStar[numStars]:
print[ "* " * numStars ]
answered Jan 27, 2017 at 15:37
dshdsh
11.8k3 gold badges30 silver badges51 bronze badges
Python has a simple pen drawing library called turtle. Using simple movement commands, we can draw shapes using the python turtle library. When teaching python to children, turtle is a good library to introduce to get children excited about the language and its features.
The basic actions used in the following examples are,
- Draw a line with pen - forward[] command
- Move without drawing - penup[], pendown[] commands
- Turn the pen to an angle - left[], right[] commands
The following python program draws a simple equilateral triangle,
import turtle board = turtle.Turtle[] board.forward[100] # draw base board.left[120] board.forward[100] board.left[120] board.forward[100] turtle.done[]
The following python program draws a right angled triangle,
import turtle board = turtle.Turtle[] board.forward[100] # draw base board.left[90] board.forward[100] board.left[135] board.forward[142] turtle.done[]
The following python program draws a star shape by drawing two identical isosceles triangles,
import turtle board = turtle.Turtle[] # first triangle for star board.forward[100] # draw base board.left[120] board.forward[100] board.left[120] board.forward[100] board.penup[] board.right[150] board.forward[50] # second triangle for star board.pendown[] board.right[90] board.forward[100] board.right[120] board.forward[100] board.right[120] board.forward[100] turtle.done[]
Le’ts learn how to draw a triangle in Python. We can easily do that using the turtle module.
These are the methods that we will use to create a triangle.
- Turtle[]: It will instantiate a new turtle object.
- forward[]: It takes a number and moves the turtle [pen] by that given distance.
- left[]: It turns the turtle to a given angle in the anti-clockwise direction. By default, it takes an angle in degrees.
- right[]: It turns the pen in the clockwise direction.
- fillcolor[]: This method sets the color of the shape to be drawn.
- begin_fill[]: We need to call this method before drawing the shape that needs to be filled.
- end_fill[]: We need to call this method after we have drawn the shape. It fills it with the given color.
Now that we know all the required methods, let’s get started and draw a basic triangle.
import turtle turt = turtle.Turtle[] #instantiate a new object turt.fillcolor["cyan"] #set the color of the triangle to cyan turt.begin_fill[] turt.left[120] turt.forward[150] turt.left[120] turt.forward[150] turt.left[120] turt.forward[150] turt.end_fill[] turtle.done[]#pauses the program
Initially, we create a new turtle object. Then, we set the color of the shape to cyan and call the begin_fill[] method. After that, we start drawing the triangle.
First, we rotate the pen 120o anti-clockwise, and then we move it forward 150 pixels in that direction. This is what we get.
Draw a triangle in Python Step 1
Then, we need to go down. For that, we again rotate 120o anti-clockwise and then 150 pixels forward.
Draw a triangle in Python Step 2
The last step is to draw a horizontal line to complete the triangle. We need to repeat the same step. The final triangle is given below.
Draw a triangle in Python Step 3
Instead of repeating the same lines of code, we can use a loop. Let’s see.
import turtle turt = turtle.Turtle[] #instantiate a new object turt.fillcolor["cyan"] #set the color of the triangle to cyan turt.begin_fill[] for i in range[0, 3]: turt.left[120] turt.forward[150] turt.end_fill[] turtle.done[]
The above triangle is equilateral. Let’s now draw a right-angled triangle.
import turtle turt = turtle.Turtle[] #instantiate a new object turt.fillcolor["cyan"] #set the color of the triangle to cyan turt.begin_fill[] turt.left[90] turt.forward[150] turt.left[225] turt.forward[212.13] turt.left[225] turt.forward[150] turt.end_fill[] turtle.done[]
Output
Triangle in Python
Hey guys! It’s me, Marcel, aka Maschi. I earn a full-time income online and on MaschiTuts I gladly share with you guys how I stay on top of the game! I run several highly profitable blogs & websites and love to speak about these project whenever I get a chance to do so. I do this full-time and wholeheartedly. In fact, the moment I stopped working an 8-to-5 job and finally got into online business as a digital entrepreneur, is problably one of the best decisions I ever took in my life. And I would like to make sure that YOU can get on this path as well! Don’t let anyone tell you that this can’t be done. Sky’s the limit, really…as long as you BELIEVE in it! And it all starts right here..at Maschituts!