add more example of book

Author: m15kh

chapter6.py

@@ -0,0 +1,7 @@
+class Repeater:
+    def __init__(self,value):
+        self.value = value
+    def __iter__(self):
+        return self
+    def __next__(self):
+        return self.value

class_instance.py

@@ -0,0 +1,21 @@
+import struct
+
+# Define the format string for the data (unsigned integer and a float)
+format_string = "I f"
+
+# Create a Struct object with the format string
+data_struct = struct.Struct(format_string)
+
+# Data to pack
+unsigned_int_value = 42
+float_value = 3.14
+
+# Pack the data into binary format
+packed_data = data_struct.pack(unsigned_int_value, float_value)
+
+# Print the packed binary data
+print("Packed data:", packed_data)
+
+# Unpack the data back into Python values
+unpacked_data = data_struct.unpack(packed_data)
+print("Unpacked data:", unpacked_data)

copylist.py

@@ -1,8 +1,11 @@
-a = [1, 2, 3, 4, 5]
-b = a
-print(b is a)
-c = list(a)
+class Car:
+    def __init__(self, color, mileage):
+        self.color = color
+        self.mileage = mileage
+    def __repr__(self):
+        return (f'{self.__class__.__name__}('f'{self.color!r}, {self.mileage!r})')
 
 
-print(a==c)
-print(c is a)
+
+car1 = Car("red", 1000)
+print(car1)

itreator_generator.py

@@ -0,0 +1,20 @@
+class Repeater:
+    def __init__(self,value):
+        self.value = value
+    def __iter__(self):
+        return self
+    def __next__(self):
+        return self.value
+
+
+#implement above code  with generator
+
+
+
+def repeater(value):
+    while True:
+        yield value
+
+
+for x in repeater("hi"):
+    print(x)

test.py

@@ -0,0 +1,18 @@
+import  copy
+class Point:
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+    def __repr__(self):
+        return f'Point({self.x!r}, {self.y!r})'
+
+class Rectangle:
+    def __init__(self, topleft, bottomright):
+        self.topleft = topleft
+        self.bottomright = bottomright
+    def __repr__(self):
+        return (f'Rectangle({self.topleft!r}, '
+        f'{self.bottomright!r})')
+
+rect = Rectangle(Point(0, 1), Point(5, 6))
+srect = copy.copy(rect)

validate_code.py

@@ -0,0 +1,19 @@
+
+
+class NameShortError(ValueError):
+    pass
+
+
+
+def validate(name):
+    if len(name) <10:
+        raise NameShortError(name)
+
+
+class BaseValidationError(ValueError):
+    pass
+
+try:
+    validate(name)
+except BaseValidationError as err:
+    handle_validation_error(err)