1.time.sleep(secs)

參考文檔原文：

Suspend execution for the given number of seconds. The argument may be a floating point number to indicate a more precise sleep time. The actual suspension time may be less than that requested because any caught signal will terminate the sleep() following execution of that signal's catching routine. Also, the suspension time may be longer than requested by an arbitrary amount because of the scheduling of other activity in the system.

大意：

讓程序執(zhí)行暫停指定的秒數(shù)，參數(shù)可以是浮點(diǎn)型以指定精確的時(shí)間，但是程序真正暫停的時(shí)間可能長(zhǎng)于請(qǐng)求的時(shí)間也可能短于暫停的時(shí)間。

2. raw_input( )

通過(guò)等待輸入來(lái)讓程序暫停

3. os.system("pause")

通過(guò)執(zhí)行操作系統(tǒng)的命令來(lái)讓程序暫停，該函數(shù)是通過(guò)實(shí)現(xiàn)標(biāo)準(zhǔn)C函數(shù)system( )來(lái)實(shí)現(xiàn)的。

Python2.4新加入了subprocess模塊，而且官方建議使用改模塊替換os.system所以，也可以這樣寫(xiě)：

            
subprocess.call("pause",shell=True)
          

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