Question: Modify the temperature conversion program so that it responds to the users press of the return or enter key. If the user presses this key
Modify the temperature conversion program so that it responds to the users press of the return or enter key. If the user presses this key when the insertion point is in a given field, the action which uses that field for input is triggered. Be sure to use the field names provided in the comments in your starter code.
"""
File: temperatureconverter.py
Project 8.4
Temperature conversion between Fahrenheit and Celsius.
Illustrates the use of numeric data fields.
Responds to a return key event in the entry fields.
"""
from breezypythongui import EasyFrame
class TemperatureConverter(EasyFrame):
"""A termperature conversion program."""
def __init__(self):
"""Sets up the window and widgets."""
EasyFrame.__init__(self, title = "Temperature Converter")
# Label and field for Celsius
self.addLabel(text = "Celsius",
row = 0, column = 0)
self.celsiusField = self.addFloatField(value = 0.0,
row = 1,
column = 0,
precision = 2)
# Label and field for Fahrenheit
self.addLabel(text = "Fahrenheit",
row = 0, column = 1)
self.fahrField = self.addFloatField(value = 32.0,
row = 1,
column = 1,
precision = 2)
self.celsiusField.bind('
self.fahrField.bind('
# Celsius to Fahrenheit button
self.addButton(text = ">>>>",
row = 2, column = 0,
command = self.computeFahr)
# Fahrenheit to Celsius button
self.addButton(text = "<<<<",
row = 2, column = 1,
command = self.computeCelsius)
# The controller methods
def computeFahr(self, optional=None):
"""Inputs the Celsius degrees
and outputs the Fahrenheit degrees."""
degrees = self.celsiusField.getNumber()
degrees = degrees * 9 / 5 + 32
self.fahrField.setNumber(degrees)
def computeCelsius(self, event=None):
"""Inputs the Fahrenheit degrees
and outputs the Celsius degrees."""
degrees = self.fahrField.getNumber()
degrees = (degrees - 32) * 5 / 9
self.celsiusField.setNumber(degrees)
def main():
"""Instantiate and pop up the window."""
TemperatureConverter().mainloop()
if __name__ == "__main__":
main()
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