Final answer:
To read a name and an age and print them in Python, use input() and print(). To find the first occurrence of 'Avenue' in an address, use the find() method on the string.
Step-by-step explanation:
To read a name and an age into the variables name and age, and then print a message with these variables, you can use Python code similar to the following example:
name = input('Please enter your name: ')
age = int(input('Please enter your age: '))
print(f'The age of {name} is {age}')
For finding the position of the string "Avenue" within another string variable called address, the Python code would be:
position = address.find('Avenue')
print(position)
The 'find' method returns the lowest index in the string where the specified substring is found.