Computer Science With Python Chapter 1 Review Of Phython

Which of the following can be used as valid variable identifier(s) in Python?

• total

• 7Salute

• Que$tion

• global

Name the Python Library modules which need to be imported to invoke the following functions:
(i) ceil()
(ii) randint()

Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.

TEXT=''GREAT
DAY''
for T in range[0,7]:
print TEXT(T)
print T+TEXT

Find and write the output of the following Python code:

STR = ['90','10','30','40']
COUNT = 3
SUM = 0
for I in [1,2,5,4]:
	S = STR[COUNT]
	SUM = float (S)+I
	print SUM
	COUNT-=1

Find and write the output of the following Python code :

class ITEM:
	def __init__(self,I=101,N='Pen',Q=10): #constructor
		self.Ino=I
		self.IName=N
		self.Qty=int(Q);

	def Buy(self,Q):
		self.Qty = self.Qty + Q

	def Sell(self,Q):
		self.Qty -= Q

	def ShowStock(self):
		print self.Ino,':',self.IName,'#',self.Qty

I1=ITEM()
I2=ITEM(100,'Eraser',100)
I3=ITEM(102,'Sharpener')
I1.Buy(10)
I2.Sell(25)
I3.Buy(75)
I3.ShowStock()
I1.ShowStock()
I2.ShowStock()

What is the possible outcome(s) executed from the following code? Also, specify the maximum and minimum values that can be assigned to variable N.

import random
SIDES=['EAST','WEST','NORTH','SOUTH'];
N=random.randint(1,3)
OUT=''
for I in range(N,1,-1):
	OUT=OUT+SIDES[I]
	print OUT

Which of the following can be used as a valid variable identifier(s) in Python?

• 4thSum

• Total

• Number#

• Data

Name the Python Library modules which need to be imported to invoke the following functions
(i) floor()
(ii) randint()

Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.

STRING=''WELCOME
NOTE''
for S in range[0,8]:
print STRING(S)
print S+STRING

Find and write the output of the following python code:

TXT = ['20','50','30','40']
CNT = 3
TOTAL = 0
for C in [7,5,4,6]:
	T = TXT[CNT]
	TOTAL = float (T) + C
	print

Find and write the output of the following python code:

class INVENTORY:
def __init__(self,C=101,N='Pad',Q=100): #constructor
     self.Code=C
     self.IName=N
     self.Qty=int(Q);
def Procure(self,Q):
     self.Qty = self.Qty + Q
def Issue(self,Q):
     self.Qty -= Q
def Status(self):
print self.Code,':',self.IName,'#',self.Qty
I1=INVENTORY()
I2=INVENTORY(105,'Thumb Pin',50)
I3=INVENTORY(102,'U Clip')
I1.Procure(25)
I2.Issue(15)
I3.Procure(50)
I1.Status()
I3.Status()
I2.Status()

What is the possible outcome(s) executed from the following code? Also, specify the maximum and minimum values that can be assigned to variable N.

import random
NAV = ['LEFT','FRONT','RIGHT','BACK'];
NUM = random.randint(1,3)
NAVG = ''
for C in range(NUM,1,-1):
	NAVG = NAVG+NAV[I]
	print NAVG

Write definition of a method EvenSum(NUMBERS) to add those values in the list of NUMBERS, which are odd.

Out of the following, find those identifiers, which can not be used for naming Variable or Functions in a Python program:

_Cost, Price*Qty, float, Switch,
Address One, Delete, Number12, do

Name the Python Library modules which need to be imported to invoke the following functions
(i) load()
(ii) pow()

Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.

for Name in [Amar, Shveta, Parag]
     IF Name[0]='S':
          print(Name)

Find and write the output of the following python code:

Numbers=[9,18,27,36]
for Num in Numbers:
	for N in range(1, Num%8):
		print(N,'#',end= '' )
	print()

Find and write the output of the following python code:
class Notes:

	def __init__(self,N=100,Nt='CBSE'): #constructor
		self.Nno=N
		self.NName=Nt

	def Allocate(self, N,Nt):
		self.Nno= self.Nno + N
		self.NName= Nt + self.NName

	def Show(self):
		print(self.Nno,'#',self.NName)

s=Notes()
t=Notes(200)
u=Notes(300,'Made Easy')
s.Show()
t.Show()
u.Show()
s.Allocate(4, 'Made ')
t.Allocate(10,'Easy ')
u.Allocate(25,'Made Easy')
s.Show()
t.Show()
u.Show()

What are the possible outcome(s) executed from the following code? Also, specify the maximum and minimum values that can be assigned to variable PICKER.

import random
PICK=random.randint(0,3)
CITY=['DELHI','MUMBAI','CHENNAI','KOLKATA']
for I in CITY:
	for J in range(1,PICK):
		print(I,end='')
		print()

Observe the following STUDENTS and EVENTS tables carefully and write the name of the RDBMS operation which will be used to produce the output as shown in LIST? Also, find the Degree and Cardinality of the LIST.

STUDENTS

EVENTS

LIST

How is __init__() different from __del__() ?

Name the function/method required to

1. check if a string contains only uppercase letters
2. gives the total length of the list.

Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.

def Tot(Number) #Method to find Total
	Sum=0
	for C in Range (1, Number+1):
		Sum+=C
		RETURN Sum
print Tot[3] #Function Calls
print Tot[6]

Find and write the output of the following python code :

for Name in ['Jayes', 'Ramya', 'Taruna','Suraj']:
	print Name
	if Name[0]== 'T':
		break
	else :
		print 'Finished!'
	print 'Got it!'

Find and write the output of the following python code:

class Worker :
	def_init_(self,id,name): #constructor
		self.ID=id
		self.NAME=name
	def Change (self):
		self.ID=self.ID+10
		self.NAME='Harish'
	def Display(self,ROW):
print self.ID,self.NAME,ROW
w=Worker(55,'Fardeen')
w.Display(l)
w.Change( )
w.Display(2)
print w.ID+len(w.NAME)

What are the possible outcome(s) executed from the following code? Also specify the maximum and minimum values that can be assigned to variable NUMBER.

STRING=CBSEONLINE
NUMBER=random.randint(0,3)
N=9
while STRING[N]!='L':
	print STRING[N]+STRING[NUMBER]+'#',
	NUMBER=NUMBER + 1
	N=N­l