How can I get only heading names.from the text file

问题

I have a Text file as below:

Education: 

askdjbnakjfbuisbrkjsbvxcnbvfiuregifuksbkvjb.iasgiufdsegiyvskjdfbsldfgd

Technical skills : 
 java,j2ee etc.,

work done: 

oaugafiuadgkfjwgeuyrfvskjdfviysdvfhsdf,aviysdvwuyevfahjvshgcsvdfs,bvisdhvfhjsvjdfvshjdvhfjvxjhfvhjsdbvfkjsbdkfg

I would like to extract only the heading names such as Education,Technical Skills etc.

the code is :

with open("aks.txt") as infile, open("fffm",'w') as outfile:
    copy = False
    for line in infile:
        if line.strip() == "Technical Skills":
            copy =True
        elif line.strip() == "Workdone":
            copy = True


        elif line.strip() ==  "Education":
            copy = False
        elif copy:
            outfile.write(line)
        fh = open("fffm.txt", 'r')
        contents = fh.read()
        len(contents)

回答1:

To get just the headings from your text file, you could use the follows:

import re

with open('aks.txt') as f_input:
    headings = re.findall(r'(.*?)\s*:', f_input.read())
    print headings

This would display the following:

['Education', 'Technical skills', 'work done']

回答2:

If you are sure that the title names occure before a colon (:) then you can write a regex to search for such a pattern.

    import re
    with open("aks.txt") as infile:
      for s in re.finditer(r'(?<=\n).*?(?=:)',infile.read()):
        print s.group()

The output will be like

   Education
   Technical skills 
   work done

来源：https://stackoverflow.com/questions/34004631/how-can-i-get-only-heading-names-from-the-text-file