An example of how to use try except else in Python

try_else.py

"""
The try block tries to execute an expression

If an error occurs, it calls the except block alone
If no error occur, it calls the else block

The idea behind this is, if the school exists, print it out
"""

schools = {
    'MIT': lambda: print("The school name is MIT"),
    'HARVARD': lambda: print("The school name is HARVARD"),
    'STANDFORD': lambda: print("The school name is STANDFORD")
}

try:
    school_name = schools['MIT']
except KeyError:
    raise Exception("Key error")
else:
    school_name() # The school name is MIT