#import os

def safe_divide(a, b):
    try:
        return a / b
    except ZeroDivisionError:
        return("i can't do that dave")
def safe_read(fn):
    try:
        f = open(fn)
        contents = f.read()
        f.close()
        return contents
    except FileNotFoundError:
        return "there is no spoon"

result =safe_divide(100, 10)
print(result)
print(safe_read("errors.py"))
print(safe_read("nonexistent.txt"))