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Exception Handling & Generate Functions
Question
Wired Faculty App

Write Addnew(Book) and Remove(Book) methods in Python to Add a new Book and Remove a Book from a List of Books, considering them to act as PUSH and POP operations of the data structure Stack.

Answer

class stack:
	Book=[]
	def Addnew(self):
		Name=input('Enter Book Name :')
		stack.Book.append(Name)
	def Remove(self):
		if (stack.Book==[]):
			print 'Stack Empty'
		else:
			print 'Deleted Book is : ',stack.Book.pop()

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Some More Questions From Exception Handling & Generate Functions Chapter

Observe the following table carefully and write the names of the most appropriate columns, which can be considered as (i) candidate keys and (ii) primary key.

Id Product Qty Product Transaction Date
101 Plastic Folder 12' 100 3400 2014-12-14
104 Pen Stand Standard 200 4500 2015-01-31
105 Stapler Medium 250 1200 2015-02-28
109 Punching Machine Big 200 1400 2015-03-12
103 Stapler Mini 100 1500 2015-02-02