python map()鍑芥暟，,鏍囩锛?a hre

python map()鍑芥暟，,鏍囩锛?a hre

鏍囩锛?a href='http://www.byrx.net/so/1/log' title='log'>log

鈥樷€樷€?/span>姹?+2!+3!+...+20!鐨勫拰銆?鈥樷€樷€?/span>l=range(1,21)def op(x):r=1for i in range(1,x+1):r*=ireturn rs=sum(map(op,l)) #娉ㄦ剰map鎿嶄綔print("1!+2!+3!+...+20!=%ld"%(s))

map()鏄?Python 鍐呯疆鐨勯珮闃跺嚱鏁帮紝瀹冩帴鏀朵竴涓嚱鏁?f 鍜屼竴涓?list锛屽苟閫氳繃鎶婂嚱鏁?f 渚濇浣滅敤鍦?list 鐨勬瘡涓厓绱犱笂锛屽緱鍒颁竴涓柊鐨?list 骞惰繑鍥炪€?/p>

渚嬪锛屽浜巐ist [1, 2, 3, 4, 5, 6, 7, 8, 9]

濡傛灉甯屾湜鎶妉ist鐨勬瘡涓厓绱犻兘浣滃钩鏂癸紝灏卞彲浠ョ敤map()鍑芥暟锛?/p>

鍥犳锛屾垜浠彧闇€瑕佷紶鍏ュ嚱鏁癴(x)=x*x锛屽氨鍙互鍒╃敤map()鍑芥暟瀹屾垚杩欎釜璁＄畻锛?/p>

def f(x):
return x*x
print map(f, [1, 2, 3, 4, 5, 6, 7, 8, 9])
杈撳嚭缁撴灉锛?/p>

[1, 4, 9, 10, 25, 36, 49, 64, 81]
娉ㄦ剰锛歮ap()鍑芥暟涓嶆敼鍙樺師鏈夌殑 list锛岃€屾槸杩斿洖涓€涓柊鐨?list銆?/p>

鍒╃敤map()鍑芥暟锛屽彲浠ユ妸涓€涓?list 杞崲涓哄彟涓€涓?list锛屽彧闇€瑕佷紶鍏ヨ浆鎹㈠嚱鏁般€?/p>

鐢变簬list鍖呭惈鐨勫厓绱犲彲浠ユ槸浠讳綍绫诲瀷锛屽洜姝わ紝map() 涓嶄粎浠呭彲浠ュ鐞嗗彧鍖呭惈鏁板€肩殑 list锛屼簨瀹炰笂瀹冨彲浠ュ鐞嗗寘鍚换鎰忕被鍨嬬殑 list锛屽彧瑕佷紶鍏ョ殑鍑芥暟f鍙互澶勭悊杩欑鏁版嵁绫诲瀷銆?/p>

浠诲姟
鍋囪鐢ㄦ埛杈撳叆鐨勮嫳鏂囧悕瀛椾笉瑙勮寖锛屾病鏈夋寜鐓ч瀛楁瘝澶у啓锛屽悗缁瓧姣嶅皬鍐欑殑瑙勫垯锛岃鍒╃敤map()鍑芥暟锛屾妸涓€涓猯ist锛堝寘鍚嫢骞蹭笉瑙勮寖鐨勮嫳鏂囧悕瀛楋級鍙樻垚涓€涓寘鍚鑼冭嫳鏂囧悕瀛楃殑list锛?/p>

杈撳叆锛歔鈥榓dam鈥? 鈥楲ISA鈥? 鈥榖arT鈥榏
杈撳嚭锛歔鈥楢dam鈥? 鈥楲isa鈥? 鈥楤art鈥榏

鈥樷€樷€?/span>鍋囪鐢ㄦ埛杈撳叆鐨勮嫳鏂囧悕瀛椾笉瑙勮寖锛屾病鏈夋寜鐓ч瀛楁瘝澶у啓锛屽悗缁瓧姣嶅皬鍐欑殑瑙勫垯锛?璇峰埄鐢╩ap()鍑芥暟锛屾妸涓€涓猯ist锛堝寘鍚嫢骞蹭笉瑙勮寖鐨勮嫳鏂囧悕瀛楋級鍙樻垚涓€涓寘鍚鑼冭嫳鏂囧悕瀛楃殑list锛?杈撳叆锛歔鈥榓dam鈥? 鈥楲ISA鈥? 鈥榖arT鈥榏杈撳嚭锛歔鈥楢dam鈥? 鈥楲isa鈥? 鈥楤art鈥榏鈥樷€樷€?/span>def formatName(s):    s1=s[0:1].upper()+s[1:].lower();    return s1;NameList=["adam","LISA","barT"]print(formatName("adam"))#鍦╬ython3涓紝瑕佸彇寰梞ap鐢熸垚鐨刲ist锛岄渶鍦╩ap鍓嶅姞list()print(list(map(formatName,[鈥?/span>abc鈥?/span>,鈥?/span>defF鈥?/span>,鈥?/span>AAAA鈥?/span>])))

鍙傝€冨崥瀹細http://www.cnblogs.com/superxuezhazha/p/5714970.html

python map()鍑芥暟

鏍囩锛?a href='http://www.byrx.net/so/1/log' title='log'>log

鍘熸枃鍦板潃锛歨ttp://www.cnblogs.com/dengnilikai/p/6606470.html