string模块中的常量可以用于生成这些随机字符串,通过结合random模块来实现。 示例如下: import string import random def generate_random_string(length=8): # 选择字符池 characters = string.ascii_letters + string.digits # 随机选择字符并组合 return ''.join(random.choice(characters) for _ in range(length)...
While other exceptions may still occur, this method is called “safe” because substitutions always tries to return a usable string instead of raising an exception. In another sense,safe_substitute()may be anything other than safe, since it will silently ignore malformed templates containing dangling...
new_string = template.substitute(original=original_string, addition=character_to_add) print(new_string) 在这个例子中,我们使用Template类创建了一个模板字符串,并通过substitute方法将original_string和character_to_add拼接成新的字符串new_string,结果为Hello!。 六、使用字符串format方法 Python的format方法提供了...
>>> name = 'Guido' >>> n = 37 >>> '%(name) has %(n) messages.' % vars() 'Guido has 37 messages.' >>> >>> import string >>> name = 'Guido' >>> n = 37 >>> s = string.Template('$name has $n messages.') >>> s.substitute(vars()) 'Guido has 37 messages.' >...
('Invalid placeholder in string: line %d, col %d' % 146 (lineno, colno)) 147 148 def substitute(*args, **kws): 149 if not args: 150 raise TypeError("descriptor 'substitute' of 'Template' object " 151 "needs an argument") 152 self, args = args[0], args[1:] # allow the "...
@[\\]^_`{|}~' In [13]: string.Template Out[13]: string.Template In [14]: string.whitespace Out[14]: ' \t\n\r\x0b\x0c' In [15]: s = string.Template('$who like $what') In [16]: s.substitute(who='I',what='Python') Out[16]: 'I like Python' In [17]: s.safe...
('Invalid placeholder in string: line %d, col %d' % 146 (lineno, colno)) 147 148 def substitute(*args, **kws): 149 if not args: 150 raise TypeError("descriptor 'substitute' of 'Template' object " 151 "needs an argument") 152 self, args = args[0], args[1:] # allow the "...
import string values = {'var': 66} t = string.Template(""" variable : $var escape : $var variable in text : ${var}和我拼接 """) print(t.substitute(values)) print(t.safe_substitute(values)) 运行后的结果如下 variable : 66 escape : 66 variable in text : 66和我拼接 variable : ...
When to use: Use this method for simple replacements when you need to substitute all instances of a character or sequence of characters. Replace a Character in a String Using Slicing Method Slicing involves creating a new string by concatenating parts of the original string with the replacement ...
3、插值类:f-string 为了节省篇幅,此处直接把可以顺利拼接的 4 种写法罗列如下: 代码语言:txt AI代码解释 >>> "%s %d" % ("Python猫", 666) 'Python猫 666' >>> from string import Template >>> s = Template('${s1}${s2}') >>> s.safe_substitute(s1='Python猫',s2=666) ...