python取字符串中最后的一个特定字符之后的字符串 python 新手请教，用python取字符串中最后的一个特...
python\u4e2d\u5982\u4f55\u53d6\u51fa\u5b57\u7b26\u4e32\u4e2d\u6700\u540e\u4e00\u4e2a\u7279\u5b9a\u5b57\u7b26\u540e\u7684\u5b57\u7b26\u4e32#\u5728a\u4e2d\u67e5\u627e\u6700\u540e\u4e00\u4e2ab\u540e\u9762\u7684\u5b57\u7b26
a="ABCDEFGHIJABCDEFGHIJABCDEFGHIJ"
b="H"
print(a[a.rfind(b):])
\u6216\uff1a
str = "addhakshdaskhdsak-----12345.0"
str.find("12345.0") \u627e\u5230"12345.0"\u6240\u5728\u4f4d\u7f6e\u7684index
str[str.find("12345.0") - 1]\u5373\u662f\u9700\u8981\u7684\u5b57\u7b26
\u6269\u5c55\u8d44\u6599\uff1a
\u901a\u5e38\u4ee5\u4e32\u7684\u6574\u4f53\u4f5c\u4e3a\u64cd\u4f5c\u5bf9\u8c61\uff0c\u5982\uff1a\u5728\u4e32\u4e2d\u67e5\u627e\u67d0\u4e2a\u5b50\u4e32\u3001\u6c42\u53d6\u4e00\u4e2a\u5b50\u4e32\u3001\u5728\u4e32\u7684\u67d0\u4e2a\u4f4d\u7f6e\u4e0a\u63d2\u5165\u4e00\u4e2a\u5b50\u4e32\u4ee5\u53ca\u5220\u9664\u4e00\u4e2a\u5b50\u4e32\u7b49\u3002\u4e24\u4e2a\u5b57\u7b26\u4e32\u76f8\u7b49\u7684\u5145\u8981\u6761\u4ef6\u662f\uff1a\u957f\u5ea6\u76f8\u7b49\uff0c\u5e76\u4e14\u5404\u4e2a\u5bf9\u5e94\u4f4d\u7f6e\u4e0a\u7684\u5b57\u7b26\u90fd\u76f8\u7b49\u3002\u8bbep\u3001q\u662f\u4e24\u4e2a\u4e32\uff0c\u6c42q\u5728p\u4e2d\u9996\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\u7684\u8fd0\u7b97\u53eb\u505a\u6a21\u5f0f\u5339\u914d\u3002\u4e32\u7684\u4e24\u79cd\u6700\u57fa\u672c\u7684\u5b58\u50a8\u65b9\u5f0f\u662f\u987a\u5e8f\u5b58\u50a8\u65b9\u5f0f\u548c\u94fe\u63a5\u5b58\u50a8\u65b9\u5f0f\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90:\u767e\u5ea6\u767e\u79d1-\u5b57\u7b26\u4e32
s = "C:/Python27/1/3.py"pos = s.rfind("/")s[:pos] # "C:/Python27/1"
import re
text = "addhakshdaskhdsak----------------------------------12345.0"
m = re.search(r'[^-]+$', text)
if m:
print m.group(0)
else:
print 'not search'
可以使用正则表达式来实现，找出最后的多个非-内容
str = "addhakshdaskhdsak----------------------------------12345.0"
str.find("12345.0") 找到"12345.0"所在位置的index
str[str.find("12345.0") - 1]即是你需要的字符
'addhakshdaskhdsak----------------------------------12345.0'.rsplit('-',1)[1]str = 'addhakshdaskhdsak----------------------------------12345.0'
str[str.rfind('-')+1:]
绛旓細str[str.find("12345.0") - 1]鍗虫槸闇瑕鐨勫瓧绗
绛旓細import retext = "addhakshdaskhdsak---12345.0"m = re.search(r'[^-]+$', text)if m: print m.group(0)else: print 'not search' 鍙互浣跨敤姝ｅ垯琛ㄨ揪寮忔潵瀹炵幇锛屾壘鍑鏈鍚庣殑澶氫釜闈-鍐呭
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绛旓細others, last = xx.rsplit('(', 1)缁撴灉濡備笅锛歰thers = '鏈ㄦ潗鍔犲伐鍙婃湪绔硅棨妫曡崏鍒跺搧涓氳亴宸ヤ汉鏁(asdf)'last = '浜)'
绛旓細def lastwordlen(txt): import re return len(re.findall(r'[A-Za-z\']+',txt)[-1])
绛旓細瀛楃涓鎴彇閬靛惊鈥滃乏闂彸寮鈥濆師鍒欙紝涔熷彨鈥滃寘宸︿笉鍖呭彸鈥濓細[寮濮嬩笅鏍囷細寮濮嬩笅鏍)宸︿晶浠0寮濮嬶紝鍙充晶浠-1寮濮 鍥犱负浼氭秹鍙婂埌鎵ц鏁堢巼鐨勯棶棰橈紝鎵浠ラ渶瑕佹牴鎹儏鍐电伒娲讳娇鐢ㄨ繖涓ょ绱㈠紩鏂瑰紡鎴彇瀛楃涓诧紝姣斿锛氭兂蹇鑾峰彇鏈鍚庝竴閮ㄥ垎瀛楃涓诧紝浣跨敤璐熺储寮曟槸鏈蹇殑銆
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绛旓細s = "C:/Python27/1/3.py"pos = s.rfind("/")s[:pos] # "C:/Python27/1"
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