for example, if we have a text that’s too long to display and we want to show just a portion of it. Or if we want to make an acronym by taking the first letter of each word in a phrase. We can do that through an operation calledstring indexing.This...
defrandom_letter(cls):returnrandom.choice(cls.letters)@classmethod defrandom_digits(cls):returnrandom
Write a Python program to decapitalize the first letter of a given string. Use list slicing and str.lower() to decapitalize the first letter of the string. Use str.join() to combine the lowercase first letter with the rest of the characters. Omit the upper_rest parameter to keep the rest...
class Root: #① def ping(self): print(f'{self}.ping() in Root') def pong(self): print(f'{self}.pong() in Root') def __repr__(self): cls_name = type(self).__name__ return f'<instance of {cls_name}>' class A(Root): #② def ping(self): print(f'{self}.ping() in...
print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,dur),end='') time.sleep(0.1) print("\n"+"执行结束".center(scale//2,'-')) 运行结果 ---执行开始--- 100%[***->]5.00s ---执行结束--- 进程已结束,退出代码0 ④作业:平方根格式化 要求 获得用户输入的一个整数a,计算...
Python program to print words with their length of a string # Function to split into words# and print words with its lengthdefsplitString(str):# split the string by spacesstr=str.split(" ")# iterate words in stringforwordsinstr:print(words," (",len(words),")")# Main code# declare ...
letter = fruit[index] print(letter) index = index + 1 该循环遍历字符串并在每行显示一个字符串。该循环的条件是 index < len(fruit), 所以当 index 和字符串的长度相等时, 条件为假, 循环体不被执行。 被访问的最后一个字符的索 引为 len(fruit)-1, 这也是字符串的最后一个字符。
This method will also capitalize the first letter of every word in the string while all remaining characters are lower-case. The complete example code is given below: importre string="learn python"string=re.sub("([a-zA-Z])",lambdax:x.groups()[0].upper(),string,1)print("The capitalize...
Beijing is a beautiful city! (6)引用参数部分 str1 = "The first letter of '{word}' is '{word[0]}'.".format(word="hello") print(str1) 执行以上代码,输出结果为: The first letter of 'hello' is 'h'. (7)数字的处理 ① 保留小数位数 str1 = "π is {:.2f}.".format(3.1415926) ...
# python program to capitalizes the # first letter of each word in a string # function def capitalize(text): return text.title() # main code str1 = "Hello world!" str2 = "hello world!" str3 = "HELLO WORLD!" str4 = "includehelp.com is a tutorials site" # printing print("str...