This example demonstrates how to use the any and isalpha functions to check if a character string contains a letter from the alphabet. Let’s check our first character string my_string1: print(any(c.isalpha()forcinmy_string1))# Check if letters are contained in string# True ...
它使用字符串的replace()方法将string中的old_letter替换为new_letter,并将替换后的字符串存储在new_string变量中,最后返回new_string。 示例 下面是一个使用上述函数的示例代码: name="John"ifcontains_letter(name,'o'):new_name=replace_letter(name,'o','a')print(new_name)else:print("The letter 'o'...
不用使用string.contains的方法判断是否包含子字符串,但是python有更简单的方法来替换contains函数. 方法1:使用 in 方法实现contains的功能: site = 'http://www.jb51.net/' if "jb51" in site: print('site contains jb51') 输出结
Get Your Code:Click here to download the free sample codethat you’ll use to check if a string contains a substring. Take the Quiz:Test your knowledge with our interactive “How to Check if a Python String Contains a Substring” quiz. You’ll receive a score upon completion to help you...
Help on built-infunctionanyinmodule builtins:any(iterable,/)Return Trueifbool(x)is Trueforany xinthe iterable.If the iterable is empty,returnFalse.(END) 按下q键退出上述界面。 对于这个章节中的内置函数,如果你有不清楚的地方,便可以用help()来查看使用说明。
import random import string import cache def random_string(length): s = '' for i in range(length): s = s + random.choice(string.ascii_letters) return s cache.init() for n in range(1000): while True: key = random_string(20) if cache.contains(key): continue else: break value = ...
总结一下,鉴于类似序列的数据结构的重要性,Python 通过在 __iter__ 和__contains__ 不可用时调用 __getitem__ 来使迭代和 in 运算符正常工作。第一章中的原始FrenchDeck也没有继承abc.Sequence,但它实现了序列协议的两种方法:__getitem__和__len__。参见示例 13-2。
=Quit:# Display the menu.display_menu()# Constant to assume string is Palindrome is_palindrome=True # Get the user's choice.choice=int(input('\nEnter your choice: '))# Perform the selected action.ifchoice==Continue:line=input("\nEnter a string: ")str_lower=re.sub("[^a-z0-9]",...
string.index() 当输入一个参数时,会返回这个参数在对象中第一次出现时的索引值: str1="abcdef"index=str1.index("c")print(index)# 会得到2 提供几段供使用的原文,截取于维基百科: text1="""In the second instance, breaking the scheme is even more straightforward. Since there are only a limited...
text)) text = "HelloWorld" if is_english(text): print("The string contains only English...