如何删除string中的前导和尾随零？ python
我有几个这样的字母数字string
listOfNum = ['000231512-n','1209123100000-n00000','alphanumeric0000', '000alphanumeric'] 消除尾随零的所需输出将是：
listOfNum = ['000231512-n','1209123100000-n','alphanumeric', '000alphanumeric']
前导零的期望输出是：
listOfNum = ['231512-n','1209123100000-n00000','alphanumeric0000', 'alphanumeric']
去除前导零和后缀零的欲望输出将是：
listOfNum = ['231512-n','1209123100000-n00000','alphanumeric0000', 'alphanumeric']
现在我已经这样做了，请build议一个更好的方法，如果有：
listOfNum = ['000231512-n','1209123100000-n00000','alphanumeric0000', \ '000alphanumeric'] trailingremoved = [] leadingremoved = [] bothremoved = [] # Remove trailing for i in listOfNum: while i[-1] == "0": i = i[:-1] trailingremoved.append(i) # Remove leading for i in listOfNum: while i[0] == "0": i = i[1:] leadingremoved.append(i) # Remove both for i in listOfNum: while i[0] == "0": i = i[1:] while i[-1] == "0": i = i[:-1] bothremoved.append(i)
怎么样一个基本的
your_string.strip("0")
去除尾随和前导零？ 如果您只想删除尾随零，请使用.rstrip代替（而.lstrip仅适用于.lstrip零）。
[更多信息在文档中 ]
你可以用一些列表理解来获得你想要的序列：
trailing_removed = [s.rstrip("0") for s in listOfNum] leading_removed = [s.lstrip("0") for s in listOfNum] both_removed = [s.strip("0") for s in listOfNum]
删除前导+尾随“0”：
list = [i.strip('0') for i in listOfNum ]
删除前导'0'：
list = [ i.lstrip('0') for i in listOfNum ]
删除结尾“0”：
list = [ i.rstrip('0') for i in listOfNum ]
你试过带（） ：
listOfNum = ['231512-n','1209123100000-n00000','alphanumeric0000', 'alphanumeric'] print [item.strip('0') for item in listOfNum] >>> ['231512-n', '1209123100000-n', 'alphanumeric', 'alphanumeric']
你可以简单地用一个bool来做到这一点：
if int(number) == float(number): number = int(number) else: number = float(number)
strip是这种情况的最佳方法，但more_itertools.strip是一个通用的解决scheme，从一个迭代中more_itertools.strip前导和尾随元素：
import more_itertools as mit iterables = ["231512-n\n"," 12091231000-n00000","alphanum0000", "00alphanum"] pred = lambda x: x in {"0", "\n", " "} list("".join(mit.strip(i, pred)) for i in iterables) # ['231512-n', '12091231000-n', 'alphanum', 'alphanum']
请注意，在这里，我们除去了满足谓词的其他元素中的前导和尾随"0" 。 这个工具不限于string。 有关更多示例， 请参阅文档 。
