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浣跨敤global鍏抽敭瀛楀悗锛屽彉閲忓０鏄庝负鍏ㄥ眬鍙橀噺锛屽嵆鍦ㄥ嚱鏁板唴澶栭兘鍙互璁块棶鍜屼慨鏀硅鍙橀噺銆備緥濡傦細

x = 10
def func():
global x
x = 20
func()
print(x)  # 杈撳嚭 20

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闇€瑕佹敞鎰忕殑鏄紝濡傛灉鍦ㄥ嚱鏁板唴閮ㄦ病鏈変娇鐢?code>global鍏抽敭瀛楀０鏄庡彉閲忎负鍏ㄥ眬鍙橀噺锛岃€岀洿鎺ヤ慨鏀逛簡鍙橀噺鐨勫€硷紝Python浼氬皢鍏惰涓哄眬閮ㄥ彉閲忥紝鑰屼笉鏄鍏ㄥ眬鍙橀噺杩涜淇敼銆備緥濡傦細

x = 10
def func():
x = 20
func()
print(x)  # 杈撳嚭 10

鍦ㄤ笂闈㈢殑渚嬪瓙涓紝灏界鍑芥暟鍐呴儴淇敼浜?code>x鐨勫€间负20锛屼絾鐢变簬娌℃湁浣跨敤global鍏抽敭瀛楀０鏄庝负鍏ㄥ眬鍙橀噺锛屾墍浠ュ嚱鏁板唴閮ㄧ殑x琚涓哄眬閮ㄥ彉閲忥紝鍑芥暟鎵ц瀹屾瘯鍚庤閿€姣侊紝鍏ㄥ眬鍙橀噺x鐨勫€间粛鐒舵槸10銆?/p>