class Donor(json.JsonSaveable):
name = json.String()
donation = json.List()
def __init__(self, name=None, donation=None):
self.name = name
self.donation = donation
def __lt__(self, other):
return self.name < other.name
@property
def average(self):
return sum(self.donation)/len(self.donation)
@property
def total(self):
return sum(self.donation)
@property
def display(self):
print('{:20}'.format(self.name) +
'$ {:>10.2f} {:7}'.format(self.total, len(self.donation)) +
' '*14 + '$ {:>10.2f}'.format(self.average))
@property
def letter(self):
content = ('To {},\n'.format(self.name) +
'Thank you for your donation of ${:.2f}.'.format(self.total) +
'\n'*2 + '\t'*5 + '-System Generated Email')
with open(self.name + '.txt', 'w') as text:
text.write(content)
def add_donation(self, amount):
self.donation.append(amount)
class ClassWithList(js.JsonSaveable):
x = js.Int()
lst = js.List()
def __init__(self, x, lst):
self.x = x
self.lst = lst
class MyClass(js.JsonSaveable):
x = js.Int()
y = js.Float()
lst = js.List()
def __init__(self, x, lst):
self.x = x
self.lst = lst
class Donor(js.JsonSaveable):
"""Contains all information for a single donor"""
name = js.String()
_donations = js.List()
_total = js.Int()
_ave = js.Int()
def __init__(self, name, donations=None):
if not donations:
donations = []
self.name = str(name)
self._donations = list(donations)
self._total = sum(self._donations)
self._ave = self._total / len(self._donations) if donations else 0
@property
def donations(self):
"""Get list of donations for this donor"""
return self._donations
@property
def num_donations(self):
"""Get number of donations given by this donor"""
return len(self._donations)
@property
def total_donations(self):
"""Get total amount of donations given by this donor"""
return self._total
@property
def average_donations(self):
"""Get average donation amount for this donor"""
return self._ave
def add_donation(self, amount):
"""Add donation to this donor's donation history
Args:
donation (int): donation amount
"""
self._donations.append(amount)
self._total += amount
self._ave = self._total / self.num_donations
class Mailroom(json.JsonSaveable):
name = json.String()
donorlist = json.List()
def __init__(self, name=None, donorlist=None):
self.name = name
self.donorlist = donorlist
@property
def save(self):
mailroom_saved = self.to_json()
with open('mailroom.json', 'w') as file:
file.write(mailroom_saved)
print('Mailroom database saved as mailroom.json....')
@property
def load(self):
with open('mailroom.json', 'r') as file:
mailroom_loaded = json.from_json(file.read())
return mailroom_loaded
@property
def sort(self):
self.donorlist.sort()
@property
def display_all(self):
if self.donorlist[0].name is not None:
self.sort
for i in self.donorlist:
i.display
@property
def letter_all(self):
for i in self.donorlist:
i.letter
def add_donor(self, donor_name, amount):
if self.donorlist[0].name is None:
self.donorlist[0].name = donor_name
self.donorlist[0].donation = [amount]
else:
if donor_name not in [x.name for x in self.donorlist]:
self.donorlist += [Donor(donor_name, [amount])]
else:
i = [x.name for x in self.donorlist].index(donor_name)
self.donorlist[i].donation += [amount]
class DonorDatabase(js.JsonSaveable):
"""A database of Donors"""
_donors = DonorDict()
min_col_width = js.Int()
def_pad = js.Int()
col_sep = js.String()
cols = js.List()
thank_you_fmt = js.String()
def __init__(self, *donors):
if not donors:
donors = []
self._donors = DonorDict(*donors)
self.min_col_width = 12
self.def_pad = 7
self.col_sep = ' | '
self.cols = ['Donor Name', 'Total Given', 'Num Gifts', 'Average Gift']
self.thank_you_fmt = (
'\nDear {:s},\n'
'Thank you for your generous donation of ${:,.2f}.\n'
'\t\tSincerely,\n'
'\t\t -Your conscience')
def __contains__(self, item):
return item in self._donors.values()
def __getitem__(self, key):
return self._donors[key]
def __iter__(self):
for donor in self._donors.values():
yield donor
return
def __setitem__(self, key, value):
self._donors[key] = value
def challenge(self, factor, min_don=None, max_don=None):
"""Return a new database with all donations multiplied by the factor
value if within the specified min and max donation range.
Args:
factor (float): Factor value
min_don (float, optional): Defaults to None. Min donation value
max_don (float, optional): Defaults to None. Max donation value
Returns:
DonorDatabase: New DonorDatabase with factor value applied
"""
new_donors = []
for donor in self:
new_donors.append(
Donor(
donor.name,
self.filter_and_factor(factor,
donor.donations,
min_don=min_don,
max_don=max_don)))
return DonorDatabase(*new_donors)
def create_report(self):
"""Generate report of all donors and donations in database."""
sorted_dnr_keys = sorted(self.keys(),
key=lambda d: self[d].total_donations,
reverse=True)
max_name = len(max([name
for name in self.keys()], key=len)) + self.def_pad
max_total = len(max([str(d.total_donations)
for d in self], key=len)) + self.def_pad
max_gifts = len(max([str(d.num_donations)
for d in self], key=len)) + self.def_pad
max_ave = max_total
if max_name < self.min_col_width:
max_name = self.min_col_width
if max_total < self.min_col_width:
max_total = max_ave = self.min_col_width
if max_gifts < self.min_col_width:
max_gifts = self.min_col_width
hdr_fmt = (f'\n{{:^{max_name}s}}{self.col_sep}{{:^{max_total}s}}'
f'{self.col_sep}{{:^{max_gifts}s}}{self.col_sep}'
f'{{:^{max_ave}s}}\n' + '-' *
(max_name + max_total + max_gifts + max_ave +
len(self.col_sep) * 3) + '\n')
row_fmt = (f'{{:<{max_name}s}}{self.col_sep}${{:>{max_total - 1},.2f}}'
f'{self.col_sep}{{:>{max_gifts}d}}{self.col_sep}'
f'${{:>{max_ave - 1},.2f}}')
header = hdr_fmt.format(*self.cols)
rows = [
row_fmt.format(dnr, self[dnr].total_donations,
self[dnr].num_donations,
self[dnr].average_donations)
for dnr in sorted_dnr_keys
]
return header + '\n'.join(rows)
def keys(self):
"""Generator providing name of each donor in database"""
for donor in self._donors:
yield donor
@staticmethod
def filter_and_factor(factor, donations, min_don=None, max_don=None):
"""For each donation, multiply by the factor value if the donation is
within the min and max donation range, if set.
Args:
factor (float): Factor value
donations (list): List of donations to filter and factor
min_don (float, optional): Defaults to None. Min donation value
max_don (float, optional): Defaults to None. Max donation value
Raises:
ValueError: Min donation value is greater than max value
Returns:
list: New list of filtered and factored donations
"""
if min_don and max_don:
if min_don > max_don:
raise ValueError('Min donation value is greater than max')
return list(
map(lambda x: x * factor,
filter(lambda d: min_don <= d <= max_don, donations)))
elif min_don:
return list(
map(lambda x: x * factor,
filter(lambda d: d >= min_don, donations)))
elif max_don:
return list(
map(lambda x: x * factor,
filter(lambda d: d <= max_don, donations)))
else:
return list(map(lambda x: x * factor, donations))
def items(self):
"""Generator yielding name of each donor and the donor itself"""
for name, donor in self._donors.items():
yield (name, donor)
@classmethod
def load(cls, _json):
"""Generates a Donor Database based on the passed json file"""
if isinstance(_json, str):
return cls.from_json_dict(json.loads(_json))
else: # assume a file-like object
return cls.from_json_dict(json.load(_json))
def projection(self, factor, min_don=None, max_don=None):
"""Return projection for a contribution that multiplies all current
donations by 'factor' that are within the specified min and max
donation range, if specified.
Args:
factor (float): Factor value
min_don (float, optional): Defaults to None. Min donation value
max_don (float, optional): Defaults to None. Max donation value
Returns:
float: Projected contribution value
"""
projection = 0
for donor in self:
projection += sum(
self.filter_and_factor(factor,
donor.donations,
min_don=min_don,
max_don=max_don))
return projection
def save(self):
"""Saves the current Donor Database to a json file"""
now = datetime.datetime.today().strftime('%m-%d-%Y')
f_name = f'donor_dict_{now}.json'
with open(f_name, 'w') as f:
f.write(self.to_json())
def send_letters(self):
"""Create a letter for each donor and write to disk as a text file"""
now = datetime.datetime.today().strftime('%m-%d-%Y')
for donor, data in self.items():
f_name = f'{donor.replace(" ", "_")}_{now}.txt'
with open(f_name, 'w') as f:
f.write(self.thank_you_fmt.format(donor, data.total_donations))