why one line "for" expression is faster in Python? -


this question has answer here:

i have tested 4 situations.

1.

testlist = list() in range(1000000):     testlist.append(i)

2.

testlist = list() in range(1000000): testlist.append(i)

3.

testlist = list() newappend = testlist.append in range(1000000): newappend(i)

4.

[i in range(1000000)]

each time was

1 : 0.09166

2 : 0.08299

3 : 0.05003

4 : 0.04594

why others faster 1?

can find related keywords?


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