Question

How would I solve these python problems?

A) File Display

Download the file from here named numbers.txt . Write a program that displays all of the numbers in the file.

numbers.txt contains

22
14
-99
AB

B) Error Check Float Input

When you want an int input you can check the input using the string isdigit() method. However, there is no comparable check for float. Write a program that asks the user to enter a float and uses a try-except to check for floats by trying to convert the input string to a float and if it fails (ValueError).

Example Input

0
A
  
10.00

Example Output

Enter a float: \n
Error int, Enter a float: \n
Error not int, Enter a float: \n
Error not int, Enter a float: \n
Success: 10.0\n

Answer 1

A)

code:

f = open("numbers.txt","r")

for num in f:
if not num.isalpha():
print(num)

B)

code:

while True:
x = input("Enter a float: ")
try:
val = int(x)
print("Error int,",end=" ")
except ValueError:
try:
val = float(x)
print("Success: ",x)
break
except ValueError:
print("Error not int,",end=" ")

OUTPUT