import re

s1 = 'Zahnwäg 0,82505 Querfurt'

wohnort_pattern = r'[A-Z][a-z]+'

a = re.search(wohnort_pattern, s1)
print(a)

s1 = s1.replace('Ä', 'Ae')
s1 = s1.replace('Ö', 'Oe')
s1 = s1.replace('Ü', 'Ue')
s1 = s1.replace('ä', 'ae')
s1 = s1.replace('ö', 'oe')
s1 = s1.replace('ü', 'ue')
s1 = s1.replace('ß', 'ss')

a = re.search(wohnort_pattern, s1)
print(a)

"""with open('Personen.txt', 'r') as f1:
    for line in f1:
        print(line)
        zeile = line.replace('Ä', 'Ae')
        zeile = zeile.replace('Ö', 'Oe')
        zeile = zeile.replace('Ü', 'Ue')
        zeile = zeile.replace('ä', 'ae')
        zeile = zeile.replace('ö', 'oe')
        zeile = zeile.replace('ü', 'ue')
        zeile = zeile.replace('ß', 'ss')
        print(zeile)
"""