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!pip install jovian --upgrade --quiet
import jovian

Question 1: The user will enter a list of numbers and a separate number. The program will display the index at which the number is present in the list. If the number is absent, it'll return -1. Do NOT use built-in functions for searching.

a=[]
newnum=1
check=False
while True:
    newnum=input("enter your list of numbers one by one, when finished type done:")
    if newnum=="done":
        break
    else:
        a.append(float(newnum))
        
print("You entered the list", a)        
        
searchnum=float(input("enter the number you want to find the index to:"))

for i in range(0,len(a)):
    if searchnum==a[i]:
        print(i)
        check=True
        
if check==False:
    print(-1)