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Questions tagged [chained-assignment]

Chaining of consecutive and separate index operations with Python-pandas objects.

Chained assignment (or chained indexing) as it relates to indexing is a chaining of consecutive and separate index operations, where successive index operations are done on a copy of a portion of the result from the first operation.

Assignment with chained indexing will generate a SettingWithCopyWarning and should be generally be avoided. However, there are a minority of instances where the warning can be safely ignored. For these situations consider using:

with pd.option_context('mode.chained_assignment', None):
    # Code inside this `with` block will not issue the warning

For more see:

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Chaining assignment in an if condition

Hi just wondering if you use a chained assigment in an if condition, would the leftmost variable be used to check the if condition like a=b=c , its a thats ultimetly checked and not b or c #include int main() { int a, b, c =0; //…
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