class CurrencyConverterApp:
def __init__(self, currency_db, tablename):
# DB currencies stuff
self.DB = SQLiteDatabase(currency_db)
# table: currency, exchange_rate, inverse_rate
self.table = tablename
self.currencies = self._get_currencies_list()
# server stuff
self.commands = {"": self.start, "calculate": self.calculate}
def __call__(self, environ, start_response):
command = environ.get('PATH_INFO', '').lstrip('/')
form = cgi.FieldStorage(fp=environ['wsgi.input'], environ=environ)
error = False
if command in self.commands:
body = self.commands[command](form)
if body:
start_response('200 OK',
[('Content-Type', 'text/html; charset=utf-8')])
else:
error = True
else:
error = True
if error:
start_response('404 NOT FOUND', [('Content-type', 'text/plain')])
body = 'Daaafaaaquuu! 404 is here, dude.'
return [bytes(body, encoding='utf-8')]
def start(self, form=None):
return self._format_resp(START_PAGE, [("currencies", self._curr_opt_),
("value", "")])
def convert(self, sell, buy, qnt):
cond = 'currency="{}"'
ex_rate = float(
self.DB.fetchall(self.table, cond.format(buy),
["exchange_rate"])[0][0])
# print(ex_rate)
inv_rate = float(
self.DB.fetchall(self.table, cond.format(sell),
["inverse_rate"])[0][0])
return qnt * ex_rate * inv_rate
def calculate(self, form):
tags = ["curr_sell", "curr_buy", "sell_quantity"]
if all([tag in form for tag in tags]):
curr_sell = form["curr_sell"].value
curr_buy = form["curr_buy"].value
qnt = float(form["sell_quantity"].value)
converted = self.convert(curr_sell, curr_buy, qnt)
converted = str(qnt) + " " + curr_sell + " = " + str(
converted) + " " + curr_buy
else:
return "error"
return self._format_resp(START_PAGE, [("currencies", self._curr_opt_),
("value", converted)])
def _get_currencies_list(self):
currencies = self.DB.show_table(self.table, fields=["currency"])
currencies = [c[0] for c in currencies]
return sorted(currencies)
@property
def _curr_opt_(self):
res = '<option value="Select currency" disabled>Select currency</option>'
opt_pattern = '<option value="{v}">{v}</option>\n'
for curr in self.currencies:
res += opt_pattern.format(v=curr)
return res
def _format_resp(self, resp_file, arg_list):
"""
потому что ?)$#@$0 css со своими четырежды ?)$#@$0 фигурными скобками не может ?)$#@$0 не помешать
:param resp_file: html file with response
:param arg_list: list of tuples like this: ("param_name", value)
:return: formatted response without any errors!
"""
with open(resp_file) as f:
lines = f.readlines()
for (key, value) in arg_list:
for j, line in enumerate(lines):
keyword = "{" + key + "}"
if keyword in line:
i = line.find(keyword)
lines[j] = line[:i] + str(value) + line[i + len(keyword):]
return ''.join(lines)
class VisavisApp(Tk):
def __init__(self, db_name):
Tk.__init__(self)
self.months = [
"January", "February", "March", "April", "May", "June", "July",
"August", "September", "October", "November", "December"
]
self.__init_DB(db_name)
self.__init_UI()
def __init_DB(self, db_name):
self.DB = SQLiteDatabase(db_name)
structure = {
"name": "TEXT",
"day": "NUMERIC",
"month": "TEXT",
"year": "NUMERIC"
}
self.table_name = "birthdays"
self.DB.create_table(self.table_name, structure)
def __init_UI(self):
self.title("Almost Calendar")
self.addMenu = Menu(self, tearoff=0)
self.addMenu.add_command(label="Add person",
command=self.add_person_handler)
self.addMenu.add_command(label="Find birthday",
command=self.find_bday_handler)
self.config(menu=self.addMenu)
birthdays = self._fetch_week_bdays()
if len(birthdays) == 0:
Label(self, text="This week birthdays").grid(row=0, column=0)
self.widgets = []
for i in range(len(birthdays)):
self.widgets.append(Label(self, text="{}".format(birthdays[i][0])))
self.widgets[len(self.widgets) - 1].grid(row=i, column=0)
date = "{dd} {mm} {yy}".format(
dd=birthdays[i][1],
mm=birthdays[i][2],
yy=birthdays[i][3],
)
self.widgets.append(Label(self, text=date))
self.widgets[len(self.widgets) - 1].grid(row=i, column=1)
# print(self.resultsWindow.winfo_height())
# self.geometry("{w}x{h}".format(
# w=250, h=len(birthdays)*20
# ))
def _fetch_week_bdays(self):
buf = (monthrange(date.today().year,
date.today().month)[1] - date.today().day
) # проверка, выскакиваем ли мы за рамки месяца
if buf < 7:
c = """OR (day<={dd} AND month="{mm}")""".format(
dd=buf, mm=self.months[
date.today().month]) # если да, докидываем еще условие
else:
c = "" # ну нет так нет
condition = """(day>={dd} AND day<={dd}+7 AND month="{mm}")
{c2}""".format(dd=date.today().day,
mm=self.months[date.today().month - 1],
c2=c)
return self.DB.fetchall(self.table_name,
condition,
fetch_fields=["name", "day", "month", "year"])
def find_bday_handler(self):
names = [
n[0] for n in self.DB.show_table(self.table_name, fields=["name"])
]
self.findWindow = Toplevel(self)
self.findWindow.title("Find birthday")
self.search_name_inp = Spinbox(self.findWindow, values=names)
self.search_name_inp.grid(row=0, column=0)
Button(self.findWindow, text="Find",
command=self.find_handler).grid(row=1, column=0)
self.show_res_label = Label(self.findWindow, text="")
self.show_res_label.grid(row=2, column=0)
def find_handler(self):
name = '"{}"'.format(self.search_name_inp.get())
# print(name)
bday = ' '.join(
map(
str,
self.DB.fetchall(self.table_name,
condition={"name": name},
fetch_fields=["day", "month", "year"])[0]))
self.show_res_label.config(text=bday)
self.show_res_label.update_idletasks()
def add_person_handler(self):
self.addWindow = Toplevel(self)
self.addWindow.title("Add person to database")
Label(self.addWindow, text="Name:").grid(row=0, column=0)
self.name_inp = Entry(self.addWindow)
self.name_inp.grid(row=0, column=1)
Label(self.addWindow, text="Birth day:").grid(row=1, column=0)
self.b_day_inp = Entry(self.addWindow)
self.b_day_inp.grid(row=1, column=1)
Label(self.addWindow, text="Birth month:").grid(row=2, column=0)
self.b_month_inp = Spinbox(self.addWindow, values=self.months)
self.b_month_inp.grid(row=2, column=1)
Label(self.addWindow, text="Birth year:").grid(row=3, column=0)
self.b_year_inp = Entry(self.addWindow)
self.b_year_inp.grid(row=3, column=1)
Button(self.addWindow, text="Add",
command=self.save_person_handler).grid(row=4, column=1)
def save_person_handler(self):
values = {
"name": self.name_inp.get(),
"day": int(self.b_day_inp.get()),
"month": self.b_month_inp.get(),
"year": int(self.b_year_inp.get())
}
self.addWindow.destroy()
self.DB.join(self.table_name, values)
self._clear_screen()
self.__init_UI()
def _clear_screen(self):
for widget in self.widgets:
widget.destroy()
del widget