
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Define the function first_negative(nums) in python takes one parameter. nums, a possibly empty list of numbers. The function then returns the first negative item in numlist.
Note: if there are NO negative numbers in the list, the function returns the Python object None.
For example:
Test | Result |
---|---|
print(first_negative([1, 3, 9, -2])) | -2 |
print(first_negative([1, 3, 9, 2])) | None |
print(first_negative([1, -3, -9, -2])) | -3 |
print(first_negative([0, -1.1, 0, -2.2, 0, -3.3, 0])) | -1.1 |
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