python basics

marks = ['FAI', 80, 'FA2', 85, 'FA3', 95]
report = marks[-4:]

print(report)
report = report[:1] + marks[5:]
print(report)
report = marks[2:3] + marks[-2:]
print(report)
report = marks[-4:-2]
report = report[:2]
print(report)

a=10
if(a>0):
    print("postive integer")

a = '10'
if(int(a)>0):
    print("number is positive")

a = 3.0
if a <2.9:
    print("num is less than 3")
else:
    print("num is greater than 3")

a=2.0
if(a>0):
    print("num is positive")
elif(a<0):
    print("num is negative")
else:
    print("it's zero")

#nested-if ststement
num1=10
num2=30
num3=40
if(num1>num2):
    if(num1>num3):
        print("num1 is greater")
    else:
        print("num3 is greater")
elif(num2>num3):
    print("num2 is greater")
else:
    print("num3 is greater")

num = 29
if(num%3==0):
    if(num%3==0 and num%5==0):
        print("Zoom")
    else:
         print("Zip")
elif(num%5==0):
    print("Zap")

else:
    print("invalid")

num=5
count=1
while count<=num:
    print("the current number is:" ,count)
    count+=1

for num in 1,2,3,4,5:
    print("The current number is:",num)

for number in range(1,5):
    print("The current number is:",number)
    
print("---------------------------------")

for number in range(1,7,2):
    print("The current number is:",number)
    
print("---------------------------------")

for number in range(5,0,-1):
    print("The current number is:",number)

num_of_passengers=5
num_of_baggages=2
security_check=True
for passenger_count in range(1,num_of_passengers+1):
    for baggage_count in range(1,num_of_baggages+1):
        if(security_check==True):
            print("Security check of passenger:",passenger_count, "--baggage:",baggage_count,"baggage cleared")
        else:
            print("Security check of passenger:",passenger_count, "--baggage:",baggage_count,"baggage not cleared")
    

#write a program to find the sum of digits of. given number
num = 123
a = num % 10
a
num = num//10
b = num % 10
b
num = num//10
c=num % 10
print(a+b+c)

num = 234

s = str(num)
summary = 0
counter = 0

while counter< len(s):
    summary += int(s[counter])
    counter += 1
print( s + ', ' + str(summary))

num = 123456
s = str(num)
summary = 0

counter = 0
while (counter < len(s)):
    summary += int(s[counter])
    counter += 1
print( s + ', ' + str(summary))

#Write a Python function that takes two parameters, a and b, and returns their sum.
a = input("Enter a number: ")
b = input("Enter second number : ")

sum = eval(a) + eval(b)
print(sum)