append: added homework-assignment-1 for Lecture 4 on Python

Signed-off-by: l3002 <[email protected]>

python-course-content/lecture 4/Homework-Assignment-1.md

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+### Assignment 1
+
+1. Find the output of the following programs (manually):
+
+> Note: Please do this exercise manually do not use python interpreter to get your answers
+
+```
+x = 7
+if x > 2 or x%7 == 0:
+  print("value is ok")
+else:
+  print("invalid value")
+```
+
+---------------------------------------
+
+```
+x,y = [2,4]
+if (x+y)%2 == 0:
+  print("Sum of values is even")
+elif x%2 == 0:
+  print("x is even")
+elif y%2 == 0:
+  print("y is even")
+else:
+  print("nothing is even")
+```
+
+
+----------------------------------------
+
+```
+x,y = ["hello","ok"]
+if x<y:
+  print("x is lexicographically smaller than y")
+print("Done")
+```
+
+----------------------------------------
+
+```
+x = 12
+y = 23
+z = 5
+if x <= z and y <= z and z > 5:
+  print("valid")
+if x < 40:
+  print("valid again")
+if z == 4:
+  print("valid once again")
+
+print("Done!!")
+```
+
+2. Find the error in the following program.
+
+```
+# This program should print the greatest number of all the three numbers entered
+
+a = int(input("Enter the first number:\n"))
+b = int(input("Enter the second number:\n"))
+c = int(input("Enter the third number:\n"))
+
+if a > b and a > c:
+  print("a is greatest of all")
+elif b > a:
+  print("b is greatest of all")
+else:
+  print("c is greatest of all")
+
+```
+
+3. Write a menu based program which takes two integer values as input and performs the operation selected by the user.
+
+```
+
+Menu:
+
+1. find average of numbers
+2. find smallest value
+3. sum of both the values
+
+```
+
+4. Create a flow chart for the following programs.
+
+
+```
+name = input("Enter your name:")
+print("Hello",name,sep=\n)
+```
+
+---------------------------------------
+
+```
+
+x = 2 
+if x < 2:
+  print("x is smaller")
+else:
+  print("x is not smaller than 2")
+
+```
+
+5. Find & Explain the output of the following program, when the specified values are given as input:
+
+```
+x = input("Enter a vegetable name")
+y = input("Enter the color of the vegetable")
+
+if(y == "red"):
+  if(x == "pepper"):
+    print("red pepper")
+  print("the color was red")
+if(y == "blue"):
+  print("the color was blue")
+  if(x == "eggplant"):
+    print("the vegetable was eggplant")
+  else:
+    print(x);
+else:
+  print("can't do anything!!")
+
+
+
+
+# first input: y = red, x = pepper
+# second input: y = red, x = cabbage
+# third input: y = blue, x = onion
+# fourth input: y = blue, x = eggplant
+# fifth input: y = green, x = broccoli
+
+```
+
+6. Fix the following program in such a way that it correctly prints if a number is divisible by 3:
+
+```
+# This program should print if a value is divisible by 3, if not, then should print that value is not divisible by 3
+
+a = int(input("Enter a value"))
+
+if value%6 == 0:
+  print(a,"is divisible by 3")
+
+print(a,"is not divisible by 3")
+
+```