Database System Concepts
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

 

Expert Solution
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Coded using Python 3.

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