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Unit 1
# 1. Write a program to swap two numbers without taking a temporary variable.
a=int(input("Enter value of 'a' : "))
b=int(input("Enter value of 'b' : "))
a=a+b
b=a-b
a=a-b
print("a is:",a," b is:",b)
# 2. Write a program to display sum of two complex numbers.
print('Enter value in this format : a+bj ')
a = complex(input('Enter first complex number: '))
b = complex(input('Enter first complex number: '))
c = a + b
print('Sum = ', c)
# 3.Write a program to create a byte type array, read, modify, and display the elements of the array
n=[10,20,100,150,200,0,90]
x=bytearray(n)
print("original byte array")
for i in x:
print(i)
print()
x[2]=255
x[5]=21
print("modified array")
for i in x:
print(i)
# 4.Create a sequence of numbers using range datatype to display 1 to 30, with an increment of 2.
r=range(0,32,2)
for i in r:
print(i)
# 5.Write a program to find out and display the common and the non common elements in the list using membership operators
list1=["python",10,40,50,100,"welcom"]
print("Element of list1 are:",list1)
list2=[10,140,150,100,"Good morning”, “python"]
print("Element of list2 are:",list2)
print("Common element in list1 and list2\n")
for i in list1:
for j in list2:
if(i==j):
print(i)
print()
print("Uncommon elements are:")
print("of list1")
for i in list1:
if i not in list2:
print(i)
print("of list2")
for i in list2:
if i not in list1:
print(i)
# 6.Create a program to display memory locations of two variables using id() function, and then use identity operators two compare whether two objects are same or not.
a=int(input("First value:"))
b=int(input("Second value:"))
print("ID of variable a is ",id(a))
print("ID of variable b is ",id(b))
if(a is b):
print("same: by using id values")
else:
print("Different: by using id values")
if(a==b):
print("same: by object value comparison")
else:
print("Different: by object value comparison")
if(a is not b):
print("Different: by using is not operator")
else:
print("same:by using is not operator")
""" 7. Write a program that evaluates an expression given by
the user at run time using eval() function. Example:
Enter and expression: 10+8-9*2-(10*2)
Result: -20 """
print(eval(input("Enter an expression:")))
""" 8.Write a python program to find the sum of even numbers
using command line arguments. """
#run in cmd
import sys
even=int(sys.argv[1])
for i in range(1,even):
if(i %2 ==0):
print(i)
""" 9. Write a menu driven python program which perform the
following:
Find area of circle
Find area of triangle
Find area of square and rectangle
Find Simple Interest
Exit.( Hint: Use infinite while loop for Menu) """
import sys
while(True):
print("1 = Radius Of Circle")
print("2 = Radius Of Triangle")
print("3 = Radius Of Square")
print("4 = Radius Of Rectangle")
print("5 = Simple Interest")
print("6 = Exit")
Choice = int(input("Enter Value "))
while Choice>=1 and Choice <=6:
if Choice == 1:
r = int(input("Enter Radius Of Circle"))
print("Radius Of Circle is",3.14*r*r)
break
elif Choice == 2:
h = int(input("Enter Height Of Triangle"))
b = int(input("Enter Base Of Triangle"))
print("Area Of Triangle Is ",h*b/2)
break
elif Choice == 3:
a = int(input("Enter Side Of Square : "))
print("Area Of Square is ",a*a)
break
elif Choice == 4:
l = int(input("Enter Length Of Rectangle"))
w = int(input("Enter Width Of Rectangle"))
print("Area Of Rectangle is ",l*w)
break
elif Choice == 5:
p = int(input("Enter Price"))
r = int(input("Enter Rate"))
n = int(input("Enter Time"))
print("Simple Interest Is",p*r*n/100)
break
elif Choice == 6:
sys.exit()
""" 10 Write a program to assert the user enters a number
greater than zero. """
import sys
x=int(input("Enter a Number:"))
assert x>0;["Incorrect input"]
print("Your entered number",x)
""" 11. Write a program to search an element in the list using
for loop and also demonstrate the use of “else” with for
loop. """
list1 = [100,200,300,400,500]
t = int(input("Enter Value To be Found:"))
for i in list1:
if(i == t):
print("Value Find",i)
break
else:
print("Value Can't Be Found")
""" 12. Write a python program that asks the user to enter a
length in centimeters. If the user enters a negative
length, the program should tell the user that the entry is
invalid. Otherwise, the program should convert the
length to inches and print out the result. (2.54 = 1 inch). """
c = float(input("Enter Centimeters:"))
if(c<=-1):
print("Enter Positive Value")
else:
print("Inche =",c/2.54)
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