Answer to Question #280198 in Python for Lee

Question

2. Write a program which creates a class named babyRecord with four methods.

a) One method will be used to write details of a child including date of birth, name, parent

names and hospital name into a file called baby_data.txt.

b) The second method will be used to read from the file baby_data.txt and store the data in a

dictionary called records.

c) The third method will be used to search for a baby using baby name or parent names

information in the file called baby_data.txt.

d) The last method will be used to delete records in the dictionary and file respectively.

e) Clearly show how exceptions are handled in your program in each method.

Answer 1

# importing the module
import json


# reading the data from the file
with open('dictionary.txt') as f:
data = f.read()


print("Data type before reconstruction : ", type(data))

# reconstructing the data as a dictionary
js = json.loads(data)


print("Data type after reconstruction : ", type(js))
print(js)

# importing the module
import pickle


# opening file in write mode (binary)
file = open("dictionary.txt", "wb")


my_dict = {"Name": "John",
"Age": 21,
"Id": 28}


# serializing dictionary
pickle.dump(my_dict, file)


# closing the file
file.close()


# reading the data from the file
with open('dictionary.txt', 'rb') as handle:
	data = handle.read()


print("Data type before reconstruction : ", type(data))


# reconstructing the data as dictionary
d = pickle.loads(data)


print("Data type after reconstruction : ", type(d))
print(d)

# Creating an empty Dictionary Dict = {} print("Empty Dictionary: ") print(Dict) # Creating a Dictionary # with dict() method Dict = dict({1: 'Geeks', 2: 'For', 3:'Geeks'}) print("\nDictionary with the use of dict(): ") print(Dict) # Creating a Dictionary # with each item as a Pair Dict = dict([(1, 'Geeks'), (2, 'For')]) print("\nDictionary with each item as a pair: ") print(Dict) 




(e)
try:    
    a = int(input("Enter a:"))    
    b = int(input("Enter b:"))    
    c = a/b  
    print("a/b = %d"%c)    
# Using Exception with except statement. If we print(Exception) it will return exception class  
except Exception:    
    print("can't divide by zero")    
    print(Exception)  
else:    
    print("Hi I am else block")