Simplify Chained Comparison

I have an integer value x, and I need to check if it is between a start and end values, so I write the following statements:

if x >= start and x <= end:
    # do stuff

This statement gets underlined, and the tooltip tells me that I must

simplify chained comparison

As far as I can tell, that comparison is about as simple as they come. What have I missed here?

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Answers:

Method 1

Method 2

Answers:

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Method 1

In Python you can “chain” comparison operations which just means they are “and”ed together. In your case, it’d be like this:

if start <= x <= end:

Reference: https://docs.python.org/3/reference/expressions.html#comparisons

Method 2

It can be rewritten as:

start <= x <= end:

Or:

r = range(start, end + 1) # (!) if integers
if x in r:
    ....

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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