使用 Ipython ipywidget .Text() 创建多个变量

Question

我想使用 widgets.Text() 来指定可以传递到 API 请求中的多个变量（年、月、日）。

根据对的回答，我能够成功地将单个文本框中的输入保存到单个变量中。但是我想同时显示多个文本框，并将它们的输入值保存到三个不同的输出变量中。我不确定如何从给出的示例中概括。

此代码适用于单个变量：

# Create text widget for output
year_output = widgets.Text()

# Create text widget for input
year_input = widgets.Text(
    placeholder="example '2017'",
    description='Year:',
    disabled=False
    )

# Define function to bind value of the input to the output variable 
def bind_input_to_output(sender):
    year_output.value = year_input.value

# Tell the text input widget to call bind_input_to_output() on submit
year_input.on_submit(bind_input_to_output)

# Display input text box widget for input
display(year_input)

我希望能够尽可能高效地做这样的事情：

year_output = widgets.Text()
month_output = widgets.Text()
day_output = widgets.Text()

year_input = widgets.Text(
    placeholder="example '2017'",
    description='Year:',
    disabled=False
    )

month_input = widgets.Text(
    placeholder="example '04'",
    description='Month:',
    disabled=False
    )

day_input = widgets.Text(
    placeholder="example '30'",
    description='Day:',
    disabled=False
    )

#make this a generic function so that I don't have to repeat it for every input/output pair
def bind_input_to_output(sender): #what is 'sender'?
    output_var.value = input_var.value

year_input.on_submit(bind_input_to_output)
mont_input.on_submit(bind_input_to_output)
day_input.on_submit(bind_input_to_output)

display(year_input)
display(month_input)
display(day_input)

如果这还不够清楚，我们深表歉意！我可以根据需要澄清。非常感谢任何指导。谢谢！

Answer 1

我能够通过改编中的说明来做我想做的事。我的代码如下，供参考：

import ipywidgets as widgets
from IPython.display import display

class date_input():
    def __init__(self, 
                 year = "e.g. '2017'", 
                 month = "e.g. '05'", 
                 day = "e.g. '21'"
                ):
        self.year = widgets.Text(description = 'Year',value = year)
        self.month = widgets.Text(description = 'Month',value = month)
        self.day = widgets.Text(description = 'Day',value = day)        
        self.year.on_submit(self.handle_submit)
        self.year.on_submit(self.handle_submit)
        self.year.on_submit(self.handle_submit)
        display(self.year, self.month, self.day)

    def handle_submit(self, text):
        self.v = text.value
        return self.v

print("enter the year, month and day above, then press return in any field")
f = date_input()

要查看输出，在下一个单元格运行:

print("Date input captured: " + "/".join([f.year.value, f.month.value, f.day.value]))

使用 Ipython ipywidget .Text() 创建多个变量

Using Ipython ipywidget .Text() to create multiple variables

python

ipython-notebook

jupyter-notebook

ipywidgets