If the condition evaluates to FALSE or NULL, the loop is bypassed, and control passes to the next statement.
如果条件的求值结果为FALSE或NULL，那么将绕过循环，并且控制被传递给下一条语句。
If the condition evaluates to TRUE, the statement list is executed, then control resumes at the top of the loop.
如果条件的求值结果为TRUE，那么就将执行语句列表，在循环的顶部恢复控制。
The GOTO label statement can unconditionally exit from a loop and transfer control to the executable statement or statement block that follows the specified statement label.
GO TO标签语句可以无条件地退出循环，并将控制权转移到跟在指定的语句标签之后的可执行语句或语句块。
The second type of flow control statement in Python is the while loop, which executes a block of program statements while an expression evaluates True.
Python中的第二种流控制语句是while循环，它在一个表达式计算为True时执行一个程序语句块。
The second type of flow control statement in Python is the while loop, which executes a block of program statements while an expression evaluates True.
Python中的第二种流控制语句是while循环，它在一个表达式计算为True时执行一个程序语句块。
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