我正在处理一个字符串，我想删除一些特殊字符。此外，我想从中删除单个字符和数字值，但不删除字母数字值。目前，我必须多次使用re.sub()来执行该操作。我可以在一个re.sub()中使用多个条件吗？
sample = "[ This - is a 26 sample s string with ? special . characters' s26]"
sample = re.sub(r'[^a-zA-Z0-9._ "]'," ",sample)
sample = re.sub(r'\b[0-9 .]+\b',"",sample)
sample = re.sub(r'\b[a b c d e f g ..... z]+\b',"",sample)
预期产出：
sample = "This is sample string with special characters s26"