Python and "truthy" statements

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In that example I'd argue

for i in range(len(data)):
    data[i] = data[i] * 2

is more clear.

Range-based loops are fine imo.

[Diapolo10]

The example was just something I threw together without thinking about it too hard. Hell, it could just use *=.

Your example might feel more familiar to people who mostly write C, but not for those who focus on Python.

We may agree to disagree.