python 库 "urwid" 是否包含用于读取日期的小部件（日期选择器）？

Question

npyscreen has the widgets "DateCombo" and "TitleDateCombo" 选择日期。

urwid中有没有类似的东西？ 如果没有，有没有推荐的第三方库？

这是一个使用 npyscreen 的例子：

#! /usr/bin/env python3
# -*- coding: utf-8 -*-

import npyscreen

class DateForm(npyscreen.Form):
    def afterEditing(self):
        self.parentApp.setNextForm(None)

    def create(self):
        self.date = self.add(npyscreen.TitleDateCombo, name="Date")

class TestApplication(npyscreen.NPSAppManaged):
    def onStart(self):
        new_user = self.addForm("MAIN", DateForm, name="Read Date")

if __name__ == "__main__":
    TestApplication().run()

Answer 1

不，urwid 没有日期选择器，它是一个实现起来很复杂的小部件，值得拥有自己的项目，因为这些小部件通常需要考虑日期格式、区域设置等。

我不知道有任何实现它的 urwid 库，通过快速扫描我知道的也找不到任何库。

您可以尝试购买一个图书馆，但如果您自己根据自己的特定需求实施一个图书馆，您可能会更幸运。

Answer 2

python 库 urwid 似乎不包含日期选择器（2018 年的状态）。因此我写了一个（基本的）。

class被称为additional_urwid_widgets.DatePicker and can be installed via pip。

有关说明小部件功能的独立示例，请参阅here。

有关更多（和更简单）示例，请参阅here。

有关参数和选项的详细说明，请参阅the corresponding github wiki entry。

---

一些例子

最小

#! /usr/bin/env python3
# -*- coding: utf-8 -*-

from additional_urwid_widgets import DatePicker, MODIFIER_KEY      # installed via pip
import urwid                                                       # installed via pip

# Color schemes that specify the appearance off focus and on focus.
PALETTE = [("reveal_focus", "black", "white")]

dp = DatePicker(highlight_prop=("reveal_focus", None))        # By default, the focused picker is not highlighted!

pile = urwid.Pile([urwid.Text("press additionally the key modifier (default is 'ctrl')."),
                   urwid.Divider(" "),
                   dp])

loop = urwid.MainLoop(urwid.Filler(pile, "top"),
                      PALETTE)
loop.run()

今天不行

#! /usr/bin/env python3
# -*- coding: utf-8 -*-

import datetime
from additional_urwid_widgets import DatePicker, MODIFIER_KEY      # installed via pip
import urwid                                                       # installed via pip

# Color schemes that specify the appearance off focus and on focus.
PALETTE = [("reveal_focus", "black", "white")]

not_today = datetime.date(2018, 2, 20)

dp = DatePicker(initial_date=not_today,
                highlight_prop=("reveal_focus", None))        # By default, the focused picker is not highlighted!

pile = urwid.Pile([urwid.Text("press additionally the key modifier (default is 'ctrl')."),
                   urwid.Divider(" "),
                   dp])

loop = urwid.MainLoop(urwid.Filler(pile, "top"),
                      PALETTE)
loop.run()

ISO-8601 + 样式化 + 紧凑

#! /usr/bin/env python3
# -*- coding: utf-8 -*-

import calendar
from additional_urwid_widgets import DatePicker, MODIFIER_KEY      # installed via pip
import urwid                                                       # installed via pip

# Color schemes that specify the appearance off focus and on focus.
PALETTE = [("dp_barActive_focus",       "light gray",       ""),
           ("dp_barActive_offFocus",    "black",            ""),
           ("dp_barInactive_focus",     "dark gray",        ""),
           ("dp_barInactive_offFocus",  "black",            ""),
           ("dp_highlight_focus",       "black",            "brown",   "standout"),
           ("dp_highlight_offFocus",    "white",            "black")]

dp = DatePicker(month_names=[str(i).zfill(2) for i in range(13)],
                day_format=[DatePicker.DAY_FORMAT.DAY_OF_MONTH_TWO_DIGIT],
                columns=((6, DatePicker.PICKER.YEAR), (4, DatePicker.PICKER.MONTH), (4, DatePicker.PICKER.DAY)),
                min_width_each_picker=4,
                space_between=1,
                topBar_endCovered_prop=("ᐃ", "dp_barActive_focus", "dp_barActive_offFocus"),
                topBar_endExposed_prop=("───", "dp_barInactive_focus", "dp_barInactive_offFocus"),
                bottomBar_endCovered_prop=("ᐁ", "dp_barActive_focus", "dp_barActive_offFocus"),
                bottomBar_endExposed_prop=("───", "dp_barInactive_focus", "dp_barInactive_offFocus"),
                highlight_prop=("dp_highlight_focus", "dp_highlight_offFocus"))

pile = urwid.Pile([urwid.Text("press additionally the key modifier (default is 'ctrl')."),
                   urwid.Divider(" "),
                   dp])

loop = urwid.MainLoop(urwid.Filler(pile, "top"),
                      PALETTE)
loop.run()