As an expression(in the grammar):
[i for i in [1,2,3]] is a list comprehension;(i for i in [1,2,3]) is a general expression;i for i in [1,2,3] by itself is a syntax error, and that's just the way it is. There must be something surrounding it. Unless you have ( or [ around it, it's not a valid expression, because the for keyword is not valid at that point.
As an expression(in the grammar): [i for i in [1,2,3]] is...
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---16--- Question： >Use a list comprehension to square ea...
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