Python：从python中的另一个类调用函数
可以告诉我如何从另一个班级打电话给方法吗？
当我点击def insert(self):按钮然后我调用def insert(self):
#insert data after call add_expense() method
RowsExpense().add_expense()
方法。我正在使用代码
RowsExpense().add_expense()插入数据后，我拨打print('llllll')。因为self.add_widget(r)在控制台中显示而导致调用。但是from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import BooleanProperty, ListProperty, StringProperty, ObjectProperty, NumericProperty
from kivy.uix.popup import Popup
Window.clearcolor = (0.5, 0.5, 0.5, 1)
Window.size = (500, 400)
class User(Popup):
total_value = ObjectProperty(None)
def __init__(self, **kwargs):
super(User, self).__init__(**kwargs)
def add_more(self):
self.ids.rows.add_more()
def add_more2(self):
self.ids.rowsExpense.add_expense()
class ExtraPopup(Popup):
mode = StringProperty("")
def __init__(self, obj, **kwargs):
super(ExtraPopup, self).__init__(**kwargs)
def add_extra(self):
self.ids.rowsExtra.add_row()
def insert(self):
#insert data after call add_expense() method
RowsExpense().add_expense()
class RowExtra(BoxLayout):
col_data = ListProperty(["?", "?", "?", "?", "?", "?", "?", "?"])
button_text = StringProperty("")
mode = StringProperty("")
def __init__(self, **kwargs):
super(RowExtra, self).__init__(**kwargs)
self.col_data[0] = ''
self.col_data[1] = ''
self.col_data[2] = ''
class RowsExtra(BoxLayout):
#orientation = "vertical"
row_count = 0
button_text = StringProperty("")
textName = StringProperty("")
def __init__(self, **kwargs):
super(RowsExtra, self).__init__(**kwargs)
def add_row(self):
for x in range(0, 3):
self.row_count += 1
r = RowExtra(button_text=str(self.row_count))
self.add_widget(r)
class Row(BoxLayout):
col_data = ListProperty(["?", "?", "?", "?", "?"])
name = ObjectProperty(None)
button_text = StringProperty("")
col_data3 = StringProperty("")
col_data4 = StringProperty("")
def __init__(self, **kwargs):
super(Row, self).__init__(**kwargs)
def add_seller_expenses(self):
self.mode = "Add"
popup = ExtraPopup(self)
popup.ids.rowsExtra.textName = self.ids.name.text
popup.ids.rowsExtra.add_row()
popup.open()
class Rows(BoxLayout):
row_count = 0
def __init__(self, **kwargs):
super(Rows, self).__init__(**kwargs)
self.add_more()
def add_more(self):
self.row_count += 1
self.add_widget(Row(button_text=str(self.row_count)))
class RowExpense(BoxLayout):
col_data = ListProperty(["?", "?", "?"])
button_text = StringProperty("")
def __init__(self, **kwargs):
super(RowExpense, self).__init__(**kwargs)
self.col_data[0] = ' '
class RowsExpense(BoxLayout):
row_count = 0
def __init__(self, **kwargs):
super(RowsExpense, self).__init__(**kwargs)
def add_expense(self):
print('llllll')
for x in range(0, 3):
self.row_count += 1
r = RowExpense(button_text=str(self.row_count))
self.add_widget(r)
class rv(BoxLayout):
data_items = ListProperty([])
mode = StringProperty("")
def __init__(self, **kwargs):
super(rv, self).__init__(**kwargs)
def add(self):
self.mode = "Add"
popup = User()
popup.open()
class MainMenu(BoxLayout):
content_area = ObjectProperty()
def display(self):
self.rv = rv()
self.content_area.add_widget(self.rv)
class demo(App):
def build(self):
return MainMenu()
if __name__ == '__main__':
demo().run()
无效，因为行未显示在屏幕上。
demo.py
<Row>:
size_hint_y: None
height: self.minimum_height
height: 40
Button:
text: root.button_text
size_hint_x: None
top: 200
TextInput:
id : name
text: root.col_data3
width: 300
TextInput:
id: number_input
text: root.col_data4
width: 300
input_filter: 'int'
Button:
text: "Button"
size_hint_x: None
top: 200
on_press: root.add_seller_expenses()
<Rows>:
size_hint_y: None
height: self.minimum_height
orientation: "vertical"
<User>:
id: user
BoxLayout:
orientation: "vertical"
padding : 20, 5
BoxLayout:
orientation: "horizontal"
#padding : 10, 10
spacing: 10, 10
size: 450, 40
size_hint: None, None
Label:
size_hint_x: .2
text: "Number"
text_size: self.size
valign: 'bottom'
halign: 'center'
Label:
size_hint_x: .4
text: "name"
text_size: self.size
valign: 'bottom'
halign: 'center'
Label:
size_hint_x: .4
text: "Value"
text_size: self.size
valign: 'bottom'
halign: 'center'
ScrollView:
Rows:
id: rows
BoxLayout:
orientation: "horizontal"
size_hint_x: .2
size_hint_y: .2
Button:
text: "+Add More"
on_press: root.add_more()
BoxLayout:
orientation: "horizontal"
size_hint: 1, 1
BoxLayout:
orientation: "vertical"
padding: 10, 5
size_hint: .5, 1
BoxLayout:
orientation: "horizontal"
spacing: 10, 10
size: 600, 50
size_hint: 1, None
Label:
text: "SN"
text_size: self.size
size_hint_x: .3
halign: "center"
ScrollView:
RowsExpense:
id: rowsExpense
BoxLayout:
orientation: "horizontal"
size_hint_x: .2
size_hint_y: .2
Button:
text: "+Add More"
on_press: root.add_more2()
<rv>:
BoxLayout:
orientation: "vertical"
Button:
size_hint: .25, .03
text: "+Add"
on_press: root.add()
GridLayout:
size_hint: 1, None
size_hint_y: None
height: 25
cols: 3
BoxLayout:
orientation: "vertical"
<ExtraPopup>:
title: " Extra"
title_size: 20
title_font: "Verdana"
size_hint: None, None
size: 400, 400
auto_dismiss: False
BoxLayout:
orientation: "vertical"
padding : 10, 5
spacing: 10, 10
BoxLayout:
orientation: "horizontal"
spacing: 10, 10
size: 550, 30
size_hint: 1, None
Label:
size_hint_x: .3
text: "SN"
text_size: self.size
valign: 'bottom'
halign: 'center'
Label:
size_hint_x: .7
text: "Name"
text_size: self.size
valign: 'bottom'
halign: 'center'
ScrollView:
RowsExtra:
id: rowsExtra
BoxLayout:
orientation: "horizontal"
size_hint_x: .3
size_hint: .15, .1
Button:
text: "+Add More"
valign: 'bottom'
on_press: root.add_extra()
BoxLayout:
orientation: "horizontal"
padding : 10, 5
spacing: 10, 10
size_hint: .5, .2
pos_hint: {'x': .25, 'y':.25}
Button:
text: 'Ok'
id: ok_text
on_release:
root.insert()
root.dismiss()
Button:
text: 'Cancel'
#size_hint_x: .5
on_release: root.dismiss()
<RowExtra>:
size_hint_y: None
height: self.minimum_height
height: 30
Button:
text: root.button_text
size_hint_x: .3
#top: 200
TextInput:
text: root.col_data[1]
size_hint_x: .7
<RowsExtra>:
size_hint_y: None
height: self.minimum_height
orientation: "vertical"
<RowsExpense>:
size_hint_y: None
height: self.minimum_height
orientation: "vertical"
<RowExpense>:
size_hint_y: None
height: self.minimum_height
height: 30
TextInput:
text: root.col_data[0]
multiline: False
<MenuButton@Button>:
text_size: self.size
valign: "middle"
padding_x: 5
size : (100, 40)
size_hint : (None, None)
background_color: 90 , 90, 90, 90
background_normal: ''
color: 0, 0.517, 0.705, 1
border: (0, 10, 0, 0)
<MainMenu>:
content_area: content_area
BoxLayout:
orientation: 'vertical'
spacing : 10
BoxLayout:
canvas.before:
Rectangle:
pos: self.pos
size: self.size
size_hint_y: 2
MenuButton:
text: 'Menu'
size : (50, 12)
on_release: root.display()
BoxLayout:
id: content_area
size_hint_y: 30
demo.kv
<?php get_header(); ?>
<?php
$args = array(
'post_type' => 'artists',
);
$query = new WP_Query( $args );
?>
<section class="row artists">
<?php if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post(); ?>
<div class="col-sm-12 col-md-6 col-lg-3">
<a href="<?php if( get_post_field('artist_website') ) { ?>
<?php echo $artist_website; ?>
<?php } else { the_permalink(); } ?>">
<img src="<?php get_post_field('artist_feature_image'); ?>" alt="<?php echo the_title() ; ?>">
<p><?php echo the_title() ;?></p>
</a>
</div>
<?php endwhile; endif; wp_reset_postdata(); ?>
</section>
<?php get_footer(); ?>
1 个答案:
答案 0 :(得分：1)
你正在调用类方法，而你应该调用实例方法。
您需要在您的根类中存储对您的RowsExpense实例的引用，并通过该引用运行您的方法。然后，您可以将该引用传递给您希望在其init函数中将该方法作为参数运行的类，或者使用plain old：
App.get_running_app().root.whateverYouwanttodohere()
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