"""
Errors

AssertionError		Raised when an assert statement fails
AttributeError		Raised when attribute assignment or reference fails
EOFError		    Raised when the input() function hits end-of-file condition.
FloatingPointError	Raised when a floating point operation fails.
GeneratorExit		Raised when a generator's close() method is called.
ImportError		    Raised when the imported module is not found.
ModuleNotFoundError 
IndexError		    Raised when the index of a sequence is out of range.
KeyError		    Raised when a key is not found in a dictionary
KeyboardInterrupt	Raised when the user hits the interrupt key (Ctrl+C or Delete).

"""

# import abc33
# ModuleNotFoundError

# list1 = [1,2,3]
# print(list1[4])


# mydict = {}
# mydict[1]

import time
while True:
    time.sleep(0.5)
    print("aaa")
