Python: A class constructed by a length and width and a method which will compute the area of a rectangle
Python Class: Exercise-10 with Solution
Write a Python class named Rectangle constructed by a length and width and a method which will compute the area of a rectangle.
Python: Area of a rectangle
In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. To find the area of a rectangle, multiply the length by the width.
A rectangle with four sides of equal length is a square.
Following image represents the area of a rectangle.
Sample Solution:
Python Code:
class Rectangle():
def __init__(self, l, w):
self.length = l
self.width = w
def rectangle_area(self):
return self.length*self.width
newRectangle = Rectangle(12, 10)
print(newRectangle.rectangle_area())
Sample Output:
120
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Previous: Write a Python class which has two methods get_String and print_String. get_String accept a string from the user and print_String print the string in upper case.
Next: Write a Python class named Circle constructed by a radius and two methods which will compute the area and the perimeter of a circle.
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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