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satwikkansal merged 1 commit into from
Jun 3, 2022
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Update link and add parenthesis to chained operators section #292

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Update link and add parenthesis to chained operators section
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jeffreykennethli committed Jun 3, 2022
commit d3a25fa14ea0d484aa556053ea0ce2cfcff7a8c0
6 changes: 3 additions & 3 deletions README.md
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Expand Up @@ -384,15 +384,15 @@ False

#### 💡 Explanation:

As per https://docs.python.org/3/reference/expressions.html#membership-test-operations
As per https://docs.python.org/3/reference/expressions.html#comparisons

> Formally, if a, b, c, ..., y, z are expressions and op1, op2, ..., opN are comparison operators, then a op1 b op2 c ... y opN z is equivalent to a op1 b and b op2 c and ... y opN z, except that each expression is evaluated at most once.

While such behavior might seem silly to you in the above examples, it's fantastic with stuff like `a == b == c` and `0 <= x <= 100`.

* `False is False is False` is equivalent to `(False is False) and (False is False)`
* `True is False == False` is equivalent to `True is False and False == False` and since the first part of the statement (`True is False`) evaluates to `False`, the overall expression evaluates to `False`.
* `1 > 0 < 1` is equivalent to `1 > 0 and 0 < 1` which evaluates to `True`.
* `True is False == False` is equivalent to `(True is False) and (False == False)` and since the first part of the statement (`True is False`) evaluates to `False`, the overall expression evaluates to `False`.
* `1 > 0 < 1` is equivalent to `(1 > 0) and (0 < 1)` which evaluates to `True`.
* The expression `(1 > 0) < 1` is equivalent to `True < 1` and
```py
>>> int(True)
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