正则表达式在python中提取组织名称

Question

SAMPLE PROGRAM

import re

demostr = "Department of Microbiology and Immunology. Faculty of Tropical Medicine, Mahidol University, Electronic address: pornsawan.lea@mahidol.ac.th."
org = re.search(r"([A-Z][^\s,.]+[.]?\s[(]?)*(Dept|Association|Office|University|Department)[^,\d]*(?=,|\d)", demostr).group()
print(org)   

OUTPUT

Department of Microbiology and Immunology. Faculty of Tropical Medicine

The program extracts Organization, Department from the given string. It works fine if there is , after Immunology . but when in cases there is a dot . after Organization it extracts wrong output. The required output is shown below-

EXPECTED OUTPUT

Department of Microbiology and Immunology

Answer 1

You two things in your regex this will work fine

([A-Z][^\s,.]+[.]?\s[(]?)*(Dept|Association|Office|University|Department)[^,\d]*?(?=,|\.|\d)

Thing you have missed

• .* - This is greedy in nature you need to make it lazy because of your requirement.
• \\. - You didn't included . in your alternation.

Code

    import re

    demostr = "Department of Microbiology and Immunology. Faculty of Tropical Medicine, Mahidol University, Electronic address: pornsawan.lea@mahidol.ac.th."
    org = re.search(r"([A-Z][^\s,.]+[.]?\s[(]?)*(Dept|Association|Office|University|Department)[^,\d]*?(?=,|\.|\d)", demostr).group(0)
    print(org) 

Demo

Answer 2

Please try below code.

import re

demostr = "Department of Microbiology and Immunology. Faculty of Tropical Medicine, Mahidol University, Electronic address: pornsawan.lea@mahidol.ac.th."
org = re.search(r"([A-Z][^\s,.]+[.]?\s[(]?)*(Dept|Association|Office|University|Department)[^,\d]*?(?=,|\.|\d)", demostr).group(0)
print(org)  

Output

Department of Microbiology and Immunology