merge docx files by Heading1 and Heading2

merge-docx.py

import glob
from docx import Document as Document
from docx.oxml.text.paragraph import CT_P
from docx.oxml.section import CT_SectPr
temp2=lambda x:x.style if x.__class__==CT_P else None
temp3=lambda x:x if x!='None' and x else ''
def proceed_doc(d):
    global res
    t = [temp2(x) for x in d]
    curr_num, curr_ps = None, []
    for x in range(len(t)):
        if t[x] in ('Heading1', 'Heading2'):
            if curr_num:
                if curr_num in res:
                    raise ValueError("Key is already present:" + str(curr_num))
                res[curr_num]=curr_ps
            curr_num = get_num(''.join(temp3(y.text) for y in d[x].getchildren()))
            curr_ps = [d[x]]
        elif curr_num:
            curr_ps.append(d[x])
    if curr_num:
        if curr_num in res:
            raise ValueError("Key is already present:" + str(curr_num))
        res[curr_num] = curr_ps
def get_num(e):
    res, is_it = '', False
    for x in e:
        if x.isdigit():
            is_it = True
            res += x
        elif is_it:
            return int(res)
def main():
    global res,r
    d = [Document(x).element.body.getchildren() for x in glob.glob('*.docx') if x != 'res.docx']
    res, r, i = {}, Document(), 1
    for x in d:
        proceed_doc(x)
    for x in sorted(res.keys()):
        for y in res[x]:
            r.element.body.insert(i, y)
            i += 1
    r.save('res.docx')
main()