Added the Programs for files and exceptions

Author: Yusuf, Muhammed

classInheritance/CSE_Group.py

@@ -0,0 +1,15 @@
+from Student import Student as s
+
+
+class CSE_Group(s):
+    def __init__(self):
+        super().__init__("rock", 3)
+        self.major = "Computer Science"
+
+    def printDetails(self):
+        super().printDetails()
+        print(str(self.name).capitalize(), "Major subject is", self.major)
+
+
+c = CSE_Group()
+c.printDetails()

classInheritance/MultipleInheritance.py

@@ -0,0 +1,21 @@
+class Father:
+    def skills(self):
+        print("sleeping, programming")
+
+
+class Mother:
+    def skills(self):
+        print("scolding, cooking")
+
+
+class Son(Father, Mother):
+    def skills(self):
+        # in order to call Father and Mother skills we have to use class name
+        Father.skills(self)
+        Mother.skills(self)
+        # By default it will call only son skills if the above line don't exist
+        print("playing, eating")
+
+
+s = Son()
+s.skills()

classInheritance/Student.py

@@ -0,0 +1,17 @@
+class Student:
+    name = "null"
+    roll_no = "0"
+
+    def __init__(self, name, roll_no):
+        self.name = name
+        self.roll_no = roll_no
+
+    def printDetails(self):
+        print("Student Roll Number is", self.roll_no)
+        print("Student Name is", str(self.name).capitalize())
+
+
+s1 = Student("yu", 1)
+s1.printDetails()
+s2 = Student("ay", 2)
+s2.printDetails()

dataStructure/CustomIterator.py

@@ -0,0 +1,24 @@
+class TvRemote():
+    def __init__(self):
+        self.channels = ["HBO", "Mtv", "Sony", "Sports"]
+        self.index = -1
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        self.index += 1
+        if self.index == len(self.channels):
+            raise StopIteration
+        return self.channels[self.index]
+
+
+tv = TvRemote()
+itr=iter(tv)
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+
+

dataStructure/Generators.py

@@ -0,0 +1,11 @@
+def fib():
+    a, b = 0, 1
+    while True:
+        yield a
+        a, b = b, a + b
+
+
+for f in fib():
+    if f > 1000:
+        break
+    print(f)

dataStructure/Iterators.py

@@ -0,0 +1,32 @@
+s = "you are cool bro. thanks for this explanation"
+l = s.split()
+print(l)
+
+itr = iter(l)
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+try:
+    # error in the below line since it printed all the value.
+    print(next(itr))
+except StopIteration as si:
+    print(type(si).__name__)
+
+print(50*"*")
+print(dir(l))
+print(50*"*")
+
+itr = reversed(l)
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))
+print(next(itr))

exceptions/CustomException.py

@@ -0,0 +1,12 @@
+class Accident(Exception):
+    def __init__(self, msg):
+        self.msg = msg
+
+    def printException(self):
+        print("My Custom Exception msg :", self.msg)
+
+
+try:
+    raise Accident("I Raised Custom Exception Now")
+except Accident as a:
+    a.printException()

exceptions/RaiseException.py

@@ -0,0 +1,7 @@
+try:
+    raise TypeError("I raised Type Error exception")
+except TypeError as te:
+    print(te)
+    raise ValueError("I raised Value Error exception")
+finally:
+    print("I will execute. No Matter What")

exceptions/exception.py

@@ -0,0 +1,6 @@
+x = input("Enter 1st Number : ")
+y = input("Enter 2nd Number : ")
+try:
+    z = x / int(y)
+except TypeError as te:
+    print("asdf", te)

exceptions/usageOfModule.py

@@ -0,0 +1,6 @@
+import utility
+
+utility.pyramid(11)
+
+
+

exceptions/utility.py

@@ -0,0 +1,15 @@
+def printStar():
+    print(20 * "*")
+
+
+def printHash():
+    print(20 * "#")
+
+
+import math as m
+
+
+def pyramid(r):
+    for i in range(1, r):
+        print(m.ceil(abs(r - i) // 2) * "  ", i * "* ")
+

files/ReadJson.py

@@ -0,0 +1,11 @@
+import json
+
+s = ""
+with open("data.json","r") as f:
+    s = f.read()
+
+print(s)
+print(type(s))
+s = json.loads(s)
+print(type(s))
+print(s["tom"])

files/WriteFile.py

@@ -0,0 +1,19 @@
+# unsafe
+f = open("data.txt", "w")
+f.write("wow i can write now - overwrite now")
+f.close()
+
+# by using "a" i can append
+f = open("data.txt", "a")
+f.write("\nwow i can append now ")
+f.close()
+
+# safe option use withm so no need close
+with open("data.txt", "a") as f:
+    f.write("\nI'm new line")
+
+with open("data.txt", "r") as f:
+    print(len(str(f.read()).split(" ")))
+    f.seek(0)
+    for line in f:
+        print(line)

lesson2/argumentPassTuts.py

@@ -0,0 +1,25 @@
+import argparse
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("number1", help="first number")
+    parser.add_argument("--number2", help="second number")
+    parser.add_argument("--operation", help="operation", choices=["add", "sub", "mul"])
+
+    args = parser.parse_args()
+
+    print("number1", args.number1)
+    print("number2", args.number2)
+    print("operation", args.operation)
+
+    n1 = int(args.number1)
+    n2 = int(args.number2)
+    Result = None
+
+    if args.operation == "add":
+        Result = n1 + n2
+    elif args.operation == "sub":
+        Result = n1 - n2
+    elif args.operation == "mul":
+        Result = n1 * n2
+    print("Result is", Result)