pass就是什么也不做，只是为了防止语法错误，比如：
if a>1:pass #我这里先不做任何处理，直接跳过，但是如果不写pass，就会语法错误
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是的。pass是python中的保留字，pass语句又称为空语句或占位语句。Pythonpass是空语句，是为了保持程序结构的完整性。pass不做任何事情，一般用做占位语句。
python3.3.2中的关键字如下：The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers. They must be spelled exactly as written here:
False class finallyis return
None continue forlambda try
True deffrom nonlocal while
anddelglobal notwith
as elif if or yield
assert else import pass
break except in raise
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