请问为什么提示错误是在=的位置（如图）？用的python2.7 SHELL的New File输入代码后F5就报错。
L = [75, 92, 59, 68]
sum = 0.0
for x in L:
print sum = sum + x
print sum / 4
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L = [75, 92, 59, 68]
sum = 0.0
for x in L:
print sum = sum + x
print sum / 4
2017-05-09
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