Действительно ли возможно изменить regexp синтаксис emac?

попробуйте этот код:

from unidecode import unidecode
def find_contact(contacts):
    print('Find contact')
    search_name = input('Enter the name: ')
    search_name = search_name.strip()
    search_name = search_name.lower()
    search_name = unidecode(search_name)
    all_contacts_name=[]
    for key,values in contacts.items():
        for contact in values:
            name = contact["name"]
            name = name.strip()
            name = name.lower()
            all_contacts_name.append(name)

    if search_name in all_contacts_name:
        print("this contact exists")

    else:
        print("this contact does not exisit")

find_contact({"contacts":[{"name":"xxxx"},{"name":"ZOLC"}]})

вывод:

Enter the name: ŻÓŁĆ
this contact exists