# Function for getting values from

# respective text entry boxes and 

# calling result function .                             

def find() :

# get method returns current text 

# as a string from text entry box

source = source_field.get()

destination = destination_field.get()

travel_modes = mode_field.get()

# Calling result() Function

result(source, destination, travel_modes)

# Function for inserting the train string

# in the mode_field text entry box

def train() :

mode_field.insert(10, "train")

# Function for inserting the driving string

# in the mode_field text entry box

def driving() :

mode_field.insert(10, "driving")

# Function for inserting the walking string

# in the mode_field text entry box

def walking() :

mode_field.insert(10, "walking")

# Function for clearing the contents 

# of source_field, distance_field,

# duration_field text entry boxes. 

def del_source() :

source_field.delete(0, END)

distance_field.delete(0, END)

duration_field.delete(0, END)

# Function for clearing the contents of 

# destination_field, distance_field,

# duration_field text entry boxes.

def del_destination() :

destination_field.delete(0, END)

distance_field.delete(0, END)

duration_field.delete(0, END)