如果你只想匹配整个单词，你应该使用正则表达式：import redef findWholeWord(w): return...
We’re not changing the underlying string that was assigned to it before. We’re assigning a whole new string with different content. In this case, it was pretty easy to find the index to change as there are few characters in the string.How are we supposed to know which character to ch...
如果找不到，则返回-1，实例代码如下：>>>string='笨鸟工具，x1y1z1.com'>>>string.find('笨鸟')...
AI代码解释 message='Call me at 415-555-1011 tomorrow. 415-555-9999 is my office.'foriinrange(len(message)):chunk=message[i:i+12]# ➊ifisPhoneNumber(chunk):# ➋print('Phone number found: '+chunk)print('Done') 当该程序运行时,输出将如下所示: 代码语言:javascript 代码运行次数:0 运...
importstring# load doc into memorydefload_doc(filename):# open the file as read onlyfile = open(filename,'r')# read all texttext = file.read()# close the filefile.close()returntext# extract descriptions for imagesdefload_descriptions(doc):mapping = dict()# process linesforlineindoc.sp...
()str.islower() 移除所有的特殊字符 re.sub('[^A-Za-z0-9]+', '', mystring) 如果需要判断是否包含某个子字符串,或者搜索某个字符串的下标:in 操作符可以判断字符串 if "blah" not in somestring: continuefind 可以搜索下标 s = "This be a string" if s.find("is") == -1: print "No ...
近几年来,整词遮掩(whole word masking, wwm)作为一种(几乎)不增加计算量,却能大大提升模型表现的方法,被广泛地运用在预训练语言模型中,以促进粗粒度语义的整体建模[1]。 然而,这种方法真的是通用的么? 论文作者认为,中文里词是一个组合单元,而非英文中的独立单元。因此,对中文的整词遮掩预训练并非天然有效...
我会在这里使用re.findall: string = '1.1 2 -4259.8774 0.000000 0.707664 0.002210 -0.004314-0.004912-0.000823' nums = re.findall(r'(?:\b|-)\d+(?:\.\d+)?', string) print(nums) This prints: ['1.1', '2', '-4259.8774', '0.000000', '0.707664', '0.002210', '-0.004314', '-0.00...
A blank (“”) means that a blank should be put in front of positive numbers. a plus (+) means that a sign (either plus or minus) should precede both positive and negative numbers. The find method finds a substring within a larger string. It returns the leftmost index where the ...
from __doc__获取下一行数据,不存在,则报错Python 3.x已经没有改功能"""x.next() -> the next value, or raise StopIteration"""passdefread(self, size=None):#real signature unknown; restored from __doc__读取指定字节数据"""read([size]) -> read at most size bytes, returned as a string....