10_loops.py

#Question No 1.
numbers = [1,-2,-3,-4,5,6,-7,-8,9,10]

positive_number_count = 0
for num in numbers:
          if num > 0:
                    positive_number_count+=1
print("Final count of positive number is :" , positive_number_count) #6

#Question No 2.
n = 10 
sum_even = 0
for i in range(1,n+1):
          if i % 2 == 0:
                    sum_even+=1
print("Sum of even number is:",sum_even)

#Question No 3.

number = 3

for i in range(1,11):
          if i == 5:
                    continue
          print(number , "x", i , '=', number*i)

#Question No 4.

input_str = "Python"

reversed_str = ""
for char in input_str:
          reversed_str = char + reversed_str

print(reversed_str)


#Question No 5.
input_str = "teeter"

for char in input_str:
          print(char)
          if input_str.count(char) == 1:
                    print("char is :", char)
                    break

#Question No 6.
number = 5
factorial = 1

while number > 0:
          factorial = factorial * number
          number = number -1

print("Factorial is :", factorial)

#Question No 7.

while True:
          number = int(input("Enter value b/w 1 and 10 "))
          if 1 <= number <=10:
                    print("thanks")
                    break
          else:
                    print("invalid number please again Enter")  


#Question No 8.
number = 29
is_prime = True

if number > 1:
          for i in range(2, number):
                    if (number % i) == 0:
                              is_prime = False
                              break 

print(is_prime)


#Question No 9.

items = ["apple" , "banana" , "ornage" , "apple" , "mango"]
unique_item = set()

for item in items:
          if item in unique_item:
                    print("Duplicate")
                    break
          unique_item.add(item)

print(unique_item)
#Question No 10.


import time

wait_time = 1
max_retries = 5 
attempts = 0 

while attempts < max_retries:
          print("Attempt", attempts + 1 , " wait time" , wait_time)
          time.sleep(wait_time)
          wait_time*=2
          attempts+=1