python valueerror example

Example 1: raise python

# Raise is used to cause an error
raise(Exception("Put whatever you want here!"))
raise(TypeError)

Example 2: error handling Pyhtin

# taking input from the user 
try:
    age = int(input("Please enter your age: "))
    print(age)
except:
    print("please enter a number instead! ")
    print('bye')


# if you wanna ask their age until they enter the correct number use While Loop
while True:
    try:
        age = int(input("Please enter your age: "))
        print(age)
    except:
        print("please enter a number instead! ")
    else:
        break

Example 3: how to fixvalue error in python

filename = "language.txt"
#open file for writing
fileHandler = open (filename, "w")

#Add some text
fileHandler.write("Bash\n")
fileHandler.write("Python\n")
fileHandler.write("PHP\n")

#close the file
fileHandler.close()

#open file the  file and read the data

filehandler = open(filename, "r")

#Read the  file by line

for line in fileHandler:
    print(line)

#close the  file
fileHandler.close()