列表解析

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#列表解析
x = [i*i for i in range(10)]
print(x)

#上面相当于
list1 = []
for x in range(10):
    list1.append(x**2)
print(list1)

list1 = [(x,y) for x in range(10) for y in  range(10) if x%2 == 0 if y%2 != 0]
print(list1)

list1 = []
for x in range(10):
    for y in  range(10):
        if x%2 == 0:
            if y%2 != 0:
                list1.append((x,y))
print(list1)