在执行循环语句时检查IF和WHILE循环的条件

Question

考虑以下两个循环：

if condition 1: 
   Statement1;
   Statement2;
   Statement3;

While condition2:
   Statement1;
   Statement2;
   Statement3;

现在用于IF循环;在执行每个语句（statement1，statement2，statement3）之后或仅在执行statement3之后检查condition1？

While循环的相同问题;在执行每个语句（statement1，statement2，statement3）之后还是仅在执行statement3之后检查condition2？

（Statement1，statement2和statement3可以操纵条件）

Answer 1

x = 1
while x==1:
    x = 2
    print(x)
    x = 3
    print(x)

if x == 3:
    x = 4
    print(x)
    x = 5
    print(x)

'''
output:
2
3
4
5

No conditions were checked
 before the statements inside the 
 block were finished
'''

如评论中所述，if不是循环，其条件仅在开始时检查一次。每次循环缩进部分

后，都会检查while