如何删除包含python中某些字符的完整单词

Question

我想删除一个句子中的单词，如果这个单词开始或包含某些字符

例：

string_s = '( active parts ) acetylene cas89343-06-6'

若单词包含cas或以cas开头，则从字符串中删除整个单词

input1 =  '( active parts ) acetylene cas89343-06-6'
output1 = '( active parts ) acetylene'

input2 = '( active parts ) acetylene th.cas1345'
output2 = '( active parts ) acetylene'

Answer 1

一艘班轮：

' '.join([*filter(lambda x: "cas" not in x, input1.split())])

Answer 2

将re.sub与模式\b[\w-]*cas[\w-]*\b一起使用，并替换为单个空格，然后修剪输出：

string_s = '( active parts ) acetylene cas89343-06-6'
output = re.sub(r'\b[\w-]*cas[\w-]*\b', ' ', string_s).strip()
print(string_s + '\n' + output)

这张照片是：

( active parts ) acetylene cas89343-06-6
( active parts ) acetylene

Answer 3

您可以通过以下方式完成此操作：-

string = "hello how are you"
character = "a"
newString = []
for i in string.split(' '):
    if not character in i:
        newstring.append(i)
newString = ' '.join(newString)