linux islower

Python String islower() returns True if all cased characters in the string are lowercase and there is at least one cased character, otherwise it returns False.

如果字符串中所有大小写的字符均为小写且至少有一个大小写的字符，则Python String islower（）返回True ，否则返回False 。

Python字符串islower（） (Python String islower())

Cased characters are those with general Unicode category property being one of “Lu” (Letter, uppercase), “Ll” (Letter, lowercase), or “Lt” (Letter, titlecase).

大小写字符是指具有通用Unicode类别属性的字符，它们是“ Lu”（字母大写），“ Ll”（字母小写）或“ Lt”（字母大写）之一。

Let’s look at some examples of Python string islower() function.

让我们看一些Python字符串islower（）函数的示例。

s = 'abc'
print(s.islower())

Output: True because all the string cased characters are in lowercase.

输出： True因为所有字符串大小写字符均为小写。

s = 'Abc'
print(s.islower())

Output: False because one of the cased character is in Uppercase.

输出： False因为其中一个大小写字符为大写。

s = '123'
print(s.islower())

Output: False because there are no cased characters in the string.

输出： False因为字符串中没有大小写字符。

s = 'a123'
print(s.islower())

Output: True because all the string cased characters are in lowercase.

输出： True因为所有字符串大小写字符均为小写。

s = 'åçĕń'
print(s.islower())

Output: True because all the string cased characters are in lowercase.

输出： True因为所有字符串大小写字符均为小写。

打印所有小写Unicode字符 (Print all lowercase Unicode characters)

We can use unicodedata module to check if a character is in lowercase or not. Here is the code snippet to print all the lowercase Unicode characters.

我们可以使用unicodedata模块来检查字符是否为小写。 这是打印所有小写Unicode字符的代码段。

import unicodedatacount = 0
for codepoint in range(2 ** 16):ch = chr(codepoint)if ch.islower():print(u'{:04x}: {} ({})'.format(codepoint, ch, unicodedata.name(ch, 'UNNAMED')))count = count + 1
print(f'Total Number of Lowercase Unicode Characters = {count}')

Output:

输出：

0061: a (LATIN SMALL LETTER A)
0062: b (LATIN SMALL LETTER B)
...
ff58: ｘ (FULLWIDTH LATIN SMALL LETTER X)
ff59: ｙ (FULLWIDTH LATIN SMALL LETTER Y)
ff5a: ｚ (FULLWIDTH LATIN SMALL LETTER Z)
Total Number of Lowercase Unicode Characters = 1617

Reference: Official Documentation

参考： 官方文档

翻译自: https://www.journaldev.com/24117/python-string-islower

linux islower