time = pyimport "time"

.MINYEAR: {1}
.MAXYEAR: {9999}

.TimeDelta = 'timedelta': ClassType
.TimeDelta.
    __call__: (days := Nat, seconds := Nat, microseconds := Nat, milliseconds := Nat, minutes := Nat, hours := Nat, weeks := Nat) -> .TimeDelta
    min: .TimeDelta
    max: .TimeDelta
    resolution: .TimeDelta
    total_seconds: (self: .TimeDelta) -> Float
.Date = 'date': ClassType
.Date.
    __call__: (year: Nat, month: Nat, day: Nat) -> .Date
    fromtimestamp: (timestamp: Float) -> .Date
    fromordinal: (ordinal: Nat) -> .Date
    fromisoformat: (date_string: Str) -> .Date
    fromisocalendar: (year: Nat, week: Nat, day: Nat) -> .Date
    replace: (self: .Date, year := Nat, month := Nat, day := Nat) -> .Date
    timetuple: (self: .Date) -> time.StructTime
    toordinal: (self: .Date) -> Nat
    weekday: (self: .Date) -> 0..6
    isoweekday: (self: .Date) -> 1..7
    isocalendar: (self: .Date) -> {year = Nat; week = Nat; weekday = 1..7}
    isoformat: (self: .Date) -> Str
    strftime: (self: .Date, format: Str) -> Str
    '''
    Current date or datetime:  same as `self.__class__.fromtimestamp(time.time())`.
    '''
    today!: () => .Date
    min: .Date
    max: .Date
    resolution: .TimeDelta
.TZInfo = 'tzinfo': ClassType
.Time = 'time': ClassType
.Time.
    __call__: (hour: Nat, minute: Nat, second := Nat, microsecond := Nat, tzinfo := .TZInfo or NoneType) -> .Time
    min: .Time
    max: .Time
    resolution: .TimeDelta
    fromisoformat: (time_string: Str) -> .Time
    replace: (self: .Time, hour := Nat, minute := Nat, second := Nat, microsecond := Nat, tzinfo := .TZInfo or NoneType) -> .Time
    isoformat: (self: .Time, timespec := Str) -> Str
.DateTime = 'dateTime': ClassType
.DateTime.
    __call__: (year: Nat, month: Nat, day: Nat, hour := Nat, minute := Nat, second := Nat, microsecond := Nat, tzinfo := .TZInfo or NoneType) -> .DateTime
    today!: () => .DateTime
    now!: (tz := .TZInfo or NoneType) => .DateTime
    utcnow!: () => .DateTime
    fromtimestamp: (timestamp: Float, tz := .TZInfo or NoneType) -> .DateTime
    utcfromtimestamp: (timestamp: Float) -> .DateTime
    fromordinal: (ordinal: Nat) -> .DateTime
    combine: (date: .Date, time: .Time, tzinfo := .TZInfo or NoneType) -> .DateTime
    fromisoformat: (date_string: Str) -> .DateTime
    fromisocalendar: (year: Nat, week: Nat, day: Nat) -> .DateTime
    strptime: (date_string: Str, format: Str) -> .DateTime
    min: .DateTime
    max: .DateTime
    resolution: .TimeDelta
    date: (self: .DateTime) -> .Date
    time: (self: .DateTime) -> .Time
    replace: (self: .DateTime, year := Nat, month := Nat, day := Nat, hour := Nat, minute := Nat, second := Nat, microsecond := Nat, tzinfo := .TZInfo or NoneType) -> .DateTime
    utcoffset: (self: .DateTime) -> .TimeDelta or NoneType
.TimeZone = 'timezone': ClassType