说明:字符串对象的split()只能处理简单的情况,而且不支持多个分隔符,对分隔符周围可能存在的空格也无能为力。 #example.py# #Example of splitting a string on multiple delimiters using a regeximportre#导入正则表达式模块line='asdf fjdk; afed, fjek,asdf, foo'#(a) Splitting on space, comma, and se...
解决方案1:【http://python3-cookbook.readthedocs.org/zh_CN/latest/c02/p01_split_string_on_multiple_delimiters.html】string对象的 split() 方法只适应于非常简单的字符串分割情形,它并不允许有多个分隔符或者是分隔符周围不确定的空格。当你需要更加灵活的切割字符串的时候,最好使用re.split() 方法:>>> li...
print(result)# Output ['12', '45-78']# Split on the three occurrence# maxsplit is 3result = re.split(r"\D", target_string, maxsplit=3) print(result)# Output ['12', '45', '78'] Run Regex to Split string with multiple delimiters In this section, we’ll learn how to use reg...
print(sample_string.startswith('https')) print(sample_string.startswith('Https')) print(sample_string.endswith('.com')) 输出 True False True 匹配区分大小写 参考: https://python3-cookbook.readthedocs.io/zh_CN/latest/c02/p01_split_string_on_multiple_delimiters.html...
说明：字符串对象的split()只能处理简单的情况，而且不支持多个分隔符，对分隔符周围可能存在的空格也无能为力。# example.py # # Example of splitting a string on multiple delimiters using a regex import re #导入正则表达式模块 line = 'asdf fjdk; afed, fjek,asdf, foo'# (a) Splitting on ...
说明:字符串对象的split()只能处理简单的情况,而且不支持多个分隔符,对分隔符周围可能存在的空格也无能为力。 # example.py # # Example of splitting a string on multiple delimiters using a regex import re #导入正则表达式模块 line = 'asdf
字符串的下标索引是从0开始的,所以a_string[0:2]会返回原字符串的前两个元素,从a_string[0]开始,直到但不包括a_string[2]。 如果省略了第一个索引值,Python会默认它的值为0。所以a_string[:18]跟a_string[0:18]的效果是一样的,因为从0开始是被Python默认的。 同样地,如果第2个索引值是原字符串的长...
12) string.whitespace 所有的空白符包含 \t 制表符 \n 换行符 (linefeed) \x0b \x0C \r 不要改变这个定义──因为所影响它的方法strip()和split()为被定义 A string containing all characters that are considered whitespace. On most systems this includes the characters space, tab, linefeed, retur...
1.>>> str='Learn string' 2.>>> '-'.join(str) 3.'L-e-a-r-n- -s-t-r-i-n-g' 4.>>> l1=['Learn','string'] 5.>>> '-'.join(l1) 6.'Learn-string' 7.>>> 8.>>> str.split('n') 9.['Lear', ' stri', 'g'] 10.>>> str.split('n',1) 11.['Lear', ' str...
There.split()function takes a regular expression pattern as its first argument and the target string as its second argument. You can use this function to split strings based on complex criteria, such as multiple, inconsistently used delimiters: ...