I have written the following code for getting an output of the various districts located in the given city and their respective postal codes. I want my code to be able to receive input from the user (District Name) and output the City in which it is located and it's postal code. If the user inputs a postal code they'll get the respective district(s).

zipcode = {"Trap City":{"C District": 100, "D District": 103, "E District": 104, "S District": 105}, "Zap City":{"R District": 200, "D District": 201},"Los City": {"X District": 207, "Y District": 208}}district=input('Enter your district: ')for city in zipcode:if district in city:print(city,zipcode[city][district])d_district = {k2: (k1, v2) for k1, v1 in zipcode.items() for k2, v2 in 
v1.items()}print(d_district){'C District': ('Trap City', 100),
'D District': ('Zap City', 201),
'E District': ('Trap City', 104),
'R District': ('Zap City', 200),
'S District': ('Trap City', 105),
'X District': ('Los City', 207),
'Y District': ('Los City', 208)}d_code = {v2: k2 for k1, v1 in zipcode.items() for k2, v2 in 
v1.items()}print(d_code){100: 'C District',
103: 'D District',
104: 'E District',
105: 'S District',
200: 'R District',
201: 'D District',
207: 'X District',
208: 'Y District'}

Output:

Enter your district: X District
{'C District': ('Trap City', 100), 'D District': ('Zap City', 201), 'E 
District': ('Trap City', 104), 'S District': ('Trap City', 105), 'R 
District': ('Zap City', 200), 'X District': ('Los City', 207), 'Y 
District': ('Los City', 208)}
{100: 'C District', 103: 'D District', 104: 'E District', 105: 'S 
District', 200: 'R District', 201: 'D District', 207: 'X District', 
208: 'Y District'}
>>> 

The program instead just dumps all the information instead of searching for the value?

The program does only execute the two print statements print(d_district) and print(d_code), where you actually just dump the contents of the zipcode dictionary. Your first print statement is never reached, as the condition never gets fulfilled. You have to compare to the value and not the key of the dictionary.

For the reversed case, you can check if the string entered by the user is numeric, and if this is the case, you just search for the zipcode in the same manner.

mydistrict=input('Enter your district: ')if mydistrict.strip().isnumeric():for city in zipcode:for district in zipcode[city]:if zipcode[city][district] == int(mydistrict.strip()):print(city,zipcode[city][district])
else:for city in zipcode:if mydistrict in zipcode[city]:print(city,zipcode[city][mydistrict])