Train Management (Problem 17) - InfyTQ Solution in Python

Train Management (Problem 17)

InfyTQ Solution in Python

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PROBLEM STATEMENT

The following are the details of trains:

Train No.	Train Name	From	To	Running Days	Sleeper Fair	AC Fair
16453	Prasanti Express	SBC	BBS	'Mo', 'We', 'Th'	600	987
25627	Karnataka Express	SBC	DEC	'Su', 'Tu'	1600	2500
22642	Trivandrum SF Express	VSKP	TVM	'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'	800	1256
22905	Okha Howrah Express	ST	KOAA	'We', 'Sa'	987	2879

Represent each train's detail as a dictionary in the following format:
train_dict={“train_no”:train number, “name”:train name, “from”:source, “to”:destination, “days_of_run”:list of running days, “sleeper_fare”:sleeper fare, “ac_fare”:AC fare }

Create a list of trains, name it as train_list. Consider it to be a global variable.
Refer the table below for the error messages to be returned for various conditions.

Function	Condition	Error essage
get_train_name (train_no)	If train number is not valid	“Invalid Train_no”
get_trains_for_day (day_of_run)	If day is not in proper format	“Invalid day”

• get_train_name(train_no)
  This function accepts the train number and returns the dict which contains the details of the train.
• get_trains_for_day(day_of_run)
  This function accepts a day and returns the list of numbers of the trains running on that day.
• get_total_fare(train_no,passenger_dict)
  This function accepts train_no and a dictionary of passenger details. The passenger_dict is of the following format:
  passenger_dict={ “sleeper”:5, “ac”,1 }
  This function returns the total fare based on the passenger details and train number.

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SOLUTION

#PF-Prac-17 train_list=[{'train_no': 23492, 'days_of_run': ['Su', 'Mo', 'We'], 'name': 'Tuticorin Express', 'sleeper_fare': 450, 'to': 'TUT', 'from': 'MYS', 'ac_fare': 780}, {'train_no': 45200, 'days_of_run': ['Mo', 'Fr'], 'name': 'Kaveri Express', 'sleeper_fare': 700, 'to': 'CHN', 'from': 'MYS', 'ac_fare': 1200}, {'train_no': 12093, 'days_of_run': ['Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'], 'name': 'Lokmanya Express', 'sleeper_fare': 720, 'to': 'LOK', 'from': 'CBE', 'ac_fare': 1340}, {'train_no': 67234, 'days_of_run': ['Th', 'Fr', 'Sa'], 'name': 'Poorna Express', 'sleeper_fare': 987, 'to': 'PUN', 'from': 'ERN', 'ac_fare': 2879}] def get_train_name (train_no): for i in train_list: for j in i: if i[j]==train_no: return i return "Invalid Train_no" #start writing your code here def get_trains_for_day(day_of_run): #start writing your code here list=[] for i in train_list: for j in i: n= i['days_of_run'] if day_of_run in n: if i['train_no'] not in list: list.append(i['train_no']) if list == []: return "Invalid day" return list def get_total_fare(train_no,passenger_dict): #start writing your code here n=0 for i in train_list: for j in i: if i[j]==train_no: n=passenger_dict['ac']*i['ac_fare']+passenger_dict['sleeper']*i['sleeper_fare'] return n print(get_train_name(45200)) print(get_trains_for_day("Mo")) print(get_total_fare(45200,{"sleeper":5, "ac":1}))

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