021: Classes and Objects

hatscode · hatscode · commit 775ea6f4fc53 · 2024-10-26T14:02:27.000+03:00
diff --git a/30days challange/013_List_comprehension/List_comprehension.py b/30days challange/013_List_comprehension/List_comprehension.py
@@ -51,6 +51,8 @@
 print(even_numbers)
 
 # Lambda function
+# syntax
+# lambda par1, par2, ...: expresion
 add_numbers = lambda first_number, second_number: first_number + second_number
 
 print(add_numbers(10, 20)) # prints 30
diff --git a/Generic programming/Class work/functions_2.py b/Generic programming/Class work/functions_2.py
@@ -0,0 +1,15 @@
+
+# In python, a function can return another function
+
+def sum_and_difference(a, b):
+
+    sum = a + b
+    difference = a - b
+
+    return sum, difference
+
+s, d = sum_and_difference(90, 50)
+
+print(s) # prints the sum of the numbers
+print(d) # prints the difference of the numbers
+
diff --git a/Generic programming/Class work/index.html b/Generic programming/Class work/index.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    
+</body>
+</html>
diff --git a/Generic programming/Class work/list_comprehension.py b/Generic programming/Class work/list_comprehension.py
@@ -0,0 +1,51 @@
+
+# finding the squre of even numbers using list cpmrehension
+my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+def square_of_even():
+    for i in my_list:
+        if i % 2 == 0:
+            print(i**2)
+
+square_of_even()
+
+# alternatively
+
+lst = [i**2 for i in my_list if i % 2 == 0]
+print(lst)
+
+
+
+def total(w, x, y=10, z=20):
+    return (w**x) + y + z
+
+print(total(w=3, x=2))
+
+
+# Custom sorting
+
+def main():
+    list1 = ["Alex", "Mwangi", "Mungai", "Dorcas", "Kamau", "Mary"]
+
+    print(list1.sort(key=len))
+
+main()
+
+# lambda expressions
+
+add_numbers = lambda first_number, second_number: first_number + second_number
+
+print(add_numbers(10, 10))
+
+
+marks = [90, 79, 98, 87, 98, 99, 78]
+
+marks.sort()
+
+marks.reverse()
+
+print(marks)
+
+
+scores = sorted(marks)
+
diff --git a/Generic programming/Class work/working_with_files.py b/Generic programming/Class work/working_with_files.py
@@ -0,0 +1,13 @@
+
+
+# working with files
+
+listvar = []
+
+infile = open(r"C:\Users\alexm\Desktop\Python programms\Generic programming\Class work\functions.py", 'r')
+
+for line in infile:
+    listvar.append(line.rstrip())
+
+print(listvar)
+
