列表推导式是 Python 中一种更简洁的语法,可以用来生成新列表。我们可以相同地使用upper()方法。 # 创建一个包含字符串的列表fruits=['apple','banana','cherry','date']# 使用列表推导式将每个元素转换为大写upper_fruits=[fruit.upper()forfruitinfruits]print(upper_fruits) 1. 2. 3. 4. 5. 6. 7. ...
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.' words = text.replace('.',...
la=string.ascii_lowercase#la为小写字母 ua=string.ascii_uppercase#ua为大写字母 nb=string.digits#nb为0~9的数字 ub="一二三四五六七八九"#分别从a中找出小写、大写字母、数字并进行分行输出for s in a:if s in la: ta=ta+sif s in ua: tb=tb+sif s in nb: tc=tc+sif s in ub: td=td+s...
Suppose we want to create a list of city names in uppercase: cities = ["New York", "Los Angeles", "Chicago", "Houston"] uppercase_cities = [city.upper() for city in cities] print(uppercase_cities) Output: ['NEW YORK', 'LOS ANGELES', 'CHICAGO', 'HOUSTON'] Method 4: Using enu...
9、string模块的常用方法 使用string模块的方法之前,先要导入该模块,import string importstring string.ascii_letters#所有的大小写字母string.ascii_lowercase#所有的小写字母string.ascii_uppercase#所有的大写字母string.punctuation#所有的符号string.digits#所有的数字...
uppercase_letters = ['A','B','C','D'] lowercase_letters= ['a','b','c','d'] digit= [1,2,3,4] 方法一:利用for循环,三个列表对应位置的元素直接相加。 added_list = []#列表相加的最后结果foriinrange(0, len(uppercase_letters)): ...
# Initialize a list of fruit nameswords=["apple","banana","cherry","avocado","grape"]# Create a new list containing the uppercase versions of words that start with the letter 'a'a_words_upper=[word.upper()forwordinwordsifword.startswith("a")]print(a_words_upper) ...
Let’s see what happens when there exists uppercase letters. >>>L=["oranges","apples","Bananas"]>>>L.sort()>>>L['Bananas','apples','oranges'] That’s interesting.Bananasappears beforeapples The reason for that is because Python treats all uppercase letters to be lower than lowercase ...
Check if each number is prime in the said list of numbers: False Flowchart: For more Practice: Solve these Related Problems: Write a Python program to extract the first n vowels from a string, ignoring case, and return them as uppercase. ...
These two methods are also great for sorting tuples in python. It can also improve the efficiency of searching for elements in tuples. Method 3) Using a key As we have already seen, the two functions sorted() and sort() give uppercase strings precedence over lowercase ones. We could wan...