python_src_utils_storage_file (1)

Example Python program python_src_utils_storage_file (1).py

Methods

• def load (name, ext='.txt'):
• def save (name, data=[], ext='.txt'):

Code

Python example

ENDDB = 'enddb.'
ENDREC = 'endrec.'
RECSEP = '=>'


def load (name, ext='.txt'):
    data = {}
    try:
        with open(name + ext, 'r') as file:
            key = file.readline().rstrip()
            while key != ENDDB and len(key) > 0:
                rec = {}
                field = file.readline().rstrip()
                while field != ENDREC:
                    name, value = field.split(RECSEP)
                    rec[name] = eval(value)
                    field = file.readline().rstrip()
                data[key] = rec
                key = file.readline().rstrip()
    except IOError:
        pass
    return data


def save (name, data=[], ext='.txt'):
    try:
        with open(name + ext, 'w') as file:
            for id in data:
                print >> file, id
                for (key, value) in data[id].items():
                    print >> file, key + RECSEP + repr(value)
                print >> file, ENDREC
            print >> file, ENDDB
    except IOError:
        return False
    return True

Useful Links

• Articles: https://python-commandments.org/
• Python shell: https://bsdnerds.org/learn-python/
• Tutorial: https://pythonprogramminglanguage.com/