adii1823
29 lines
657 B
Python
29 lines
657 B
Python
# assertions.py
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mylist = [1, 2, 3] # pretend this comes from an external source
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assert 4 == len(mylist) # this will break
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for position in range(4):
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print(mylist[position])
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"""
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$ python assertions.py
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Traceback (most recent call last):
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File "assertions.py", line 4, in <module>
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assert 4 == len(mylist) # this will break
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AssertionError
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"""
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# asserts with message
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assert 4 == len(mylist), f"Mylist has {len(mylist)} elements"
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"""
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$ python assertions.py
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Traceback (most recent call last):
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File "assertions.py", line 19, in <module>
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assert 4 == len(mylist), f"Mylist has {len(mylist)} elements"
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AssertionError: Mylist has 3 elements
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"""
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