peopleinteract_query.py

# interactive updates
import shelve
from person_alternative import Person
fieldnames = ('name', 'age', 'job', 'pay')

db = shelve.open('class-shelve')
while True:
    key = input('\nKey? => ')
    if not key: break
    if key in db:
        record = db[key]                      # update existing record
    else:                                     # or make/store new rec
        record = Person(name='?', age='?')    # eval: quote strings
    for field in fieldnames:
        currval = getattr(record, field)
        newtext = input('\t[%s]=%s\n\t\tnew?=>' % (field, currval))
        if newtext:
            setattr(record, field, eval(newtext))
    db[key] = record
print(db['bob'].pay)
print(type(db['bob'].pay))



db.close()