lowercase_letters=string.ascii_lowercase digits=string.digits special_chars=string.punctuation # 至少各包含一个类型的字符 password=[random.choice(uppercase_letters),random.choice(lowercase_letters),random.choice(digits),random.choice(special_chars)]# 填充剩余字符 all_chars=uppercase_letters+lowercase_let...
'>>>spam=spam.lower()>>>spam'hello, world!' 请注意,这些方法不会更改字符串本身,而是返回新的字符串值。如果你想改变原来的字符串,你必须调用字符串上的upper()或lower(),然后把新的字符串赋给原来存储的变量。这就是为什么你必须使用spam = spam.upper()来改变spam中的字符串,而不是简单地使用spam.up...
Read the whole article if you want to learn all about list sorting in Python. Otherwise, feel free to jump straight to a specific section. Sorting a list of numbers Sorting a list of strings Sorting a list of strings in a case insensitive manner Sorting a list of tuples Sorting a list ...
Python’s list() function also converts other iterable data types (such as tuples, strings, sets, and dictionaries) to lists. The following example converts a string to a list of one-character strings: >>> list('cat') ['c', 'a', 't'] This example converts a tuple to a list: ...
To do this task, we will use the concepts ofASCII value.ASCIIstands for the American Standards Code for Information exchange. It provides us the numerical value for the representation of characters. The ASCII value of uppercase letters and lowercase alphabets start from 65 to 90 and 97-122 re...
Example 2: Write a function, receive the string parameters, and return a tuple, where the first element is the number of uppercase letters, and the second element is the number of lowercase letters.事例三：编写函数，接收包含n个整数的列表lst和一个整数k(0<k<n)作为参数,返回新列表。处理规则...
RUN 1: Input a string: Hello World! Input string is: Hello World! Total number of uppercase letters: 2 Total number of lowercase letters: 8 RUN 2: nput a string: Hello@123 Input string is: Hello@123 Total number of uppercase letters: 1 Total number of lowercase letters:...
Python sort list by case By default, the strings with uppercase first letters are sorted before the other strings. We can sort strings regardless of their case as well. case_sorting.py #!/usr/bin/python text = 'Today is a beautiful day. Andy went fishing.' ...
pigLatin = [] # A list of the words in Pig Latin. for word in message.split(): # Separate the non-letters at the start of this word: prefixNonLetters = '' while len(word) > 0 and not word[0].isalpha(): prefixNonLetters += word[0] ...
Given a string S, we can transform every letter individually to be lowercase or uppercase to create another string. Return a list of all possible strings we could create. Examples: Input: S = "a1b2" Output: ["a1b2", "a1B2", "A1b2", "A1B2"] ...