[Python] Detect specific pattern regex python

I want to find all the occurrences of an specific term (and its variations) in a word document.

1. Extracted the text from the word document
2. Try to find pattern via regex

The pattern consists of words that start with DOC- and after the - there are 9 digits.

I have tried the following without success:

document variable is the extracted text with the following function:

import docx

def getText(filename):
doc = docx.Document(filename)
fullText = []
for para in doc.paragraphs:
fullText.append(para.text)
return '\n'.join(fullText)

1. pattern = re.compile('^DOC.\d{9}$')
2. pattern.findall(document)

pattern.findall(document)

Can someone help me?

Thanks in advance

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