import re

# pattern=re.compile(r'\b\w+s\b')

# example='a new day not new start symbols ???'

# print(pattern.sub('good',example))

# matchobj=re.search('(.*) not (.*?) ',example)

# print(matchobj.group())

telNumber = '''Suppose my Phone No. is 0535-1234567,

yours is 010-12345678, his is 025-87654321.'''

pattern = re.compile(r'(\d{3,4})-(\d{7,8})')

index=0

flag=1

while True:

match_result=pattern.search(telNumber,index)

if not match_result:

break

print(f'''telNumber {flag} is :{match_result.group(1)}-{match_result.group(2)},and it starts from {match_result.start()},end with {match_result.end()}''')

index=match_result.end()+1

flag+=1