The all() Function in Python

How to check if every element in an iterable satisfies a condition

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satisfying all conditions

Let’s say that there’s a job posting for a data science position. This position requires a candidate to meet all of the following criteria: at least 10 years of SQL experience, 12 years of machine learning experience, and 8 years of statistical analysis experience.

and operator

We can write a function that takes in the years of experience a candidate has, and checks whether that candidate satisfies all the requirements by returning True or False, using the familiar and operator as follows:

def is_qualified(sql, ml, stats):
    if (sql >= 10) and (ml >= 12) and (stats >= 8):
        return True
    else:
        return False

The above function uses the and operator to check if all conditions, or operands, are True. If all the expressions evaluate to True, the and operator will return True.

So if a candidate has 11 years of SQL experience, 12 years of machine learning experience, and 9 years of statistical analysis experience, the function will return True:

is_qualified(11, 12, 9)
# True