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CBSE COMPUTER SCIENCE
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2
+9
12-CS-BOARD-SET-2-QP.pdf
309
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12-CS-SAMPLE PAPER-QA.pdf
264
4
-11%4, mean 4*3-11 where as 11%-4 mean -4*3+11
242
5
CS Python Basics 1 : https://forms.gle/M6dDNphiHh4bRgxs8 Python Basics 2 : https://forms.gle/dUxG6ZHHXYknNLxS6 Python Basics 3 : https://forms.gle/jo5emGGiMy6Pwhft8 Python Basics 4 : https://forms.gle/APYRruoMjMszWr1Q6 Functions 1 : https://forms.gle/xoV6fstREXndY3CG8 Functions 2 : https://forms.gle/FFcMpV2ERrCNenK46 List : https://forms.gle/KdV4iz8Y765Z27Fc7 String : https://forms.gle/Te8nzz3iPcTHppji6 Tuple : https://forms.gle/iGd6KudqwmZSRzWi6 Dictionary : https://forms.gle/uUqc8vZdrc6FzgSG8 Data Structure 1 : https://forms.gle/BLob2Y7hxqKBszk28 Data Structure 2 : https://forms.gle/SSe8pJhpVberpZ7A9 Computer Networks 1 : https://forms.gle/PBYLuAKzRmZ7r9Rw7 Computer Networks 2 : https://forms.gle/nRWNqGaW6xFRMHiB6 Computer Networks 3 : https://forms.gle/gXHErV2oXfscFycq7 Binary File : https://forms.gle/yVaV2GhSEwKvu4w88 PT2 : https://forms.gle/uisopa6KWnHBuCAXA Sample QP : https://forms.gle/TQLs5f7BNGP5hXi86 Online Class : https://forms.gle/AtYV6o2pmCJFE2Wr9
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Matn yo'q...
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+1
Worksheet - List.pdf
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Matn yo'q...
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0swaal_CBSE_Computer_Science_QB_Chapterwise_Solved_Papers_2024.pdf
257
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import pickle def writedata( ): list =[ ] while True: roll = input("Enter student Roll No:") sname = input("Enter student Name :") student = {"roll":roll,"name":sname} list.append(student) choice= input("Want to add more record(y/n) :") if(choice=='n'): break file = open("student.dat","wb") pickle.dump(list,file) #list of dictionary dumped only once in file as now dictionary is appended inside the list file.close( ) def readdata( ): file = open("student.dat", "rb") list1 = pickle.load(file) print(list1) for i in list1: print(i['roll'],i['name']) file.close() def search(): file = open("student.dat", "rb") list1 = pickle.load(file) pname=input("enter the name to be searched:") for i in list1: if (i['name']==pname): print("record found!") print("rollno=",i['roll'],"name=",i['name']) break else: print("not found!") print("Press-1 to write data and Press-2 to read data Press 3 to search record ") choice=int(input( "enter choice:")) if choice==1: writedata() elif choice==2: readdata() elif choice==3: search() else: print("You entered invalid value")
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#Write a program to insert, display and search a number in a binary file. If number is not found then display appropriate message. #single list program import pickle def write(): f=open("sample.dat",'wb') rec=[3,5,7,2,6,7,1] #pre-defined list #user input code below ''' while True: x=int(input("enter value:")) rec.append(x) ch=input("enter more?:") if(ch=='n'): break ''' pickle.dump(rec,f) # entire list written to file once print("added") f.close() def read(): print("reading...") f=open("sample.dat",'rb') p=pickle.load(f) print(p) f.close() def search(): print("searching....") f=open("sample.dat",'rb') found=0 x=int(input("enter the number you want to search:")) rec=pickle.load(f) print(rec) for R in rec: if x==R: found=1 print("record found") break if(found==0): print("record not found") f.close() print("*"*20,"MENU","*"*20) print("1.write\n2.read\n3.search") choice=int(input("enter your choice:")) if(choice==1): write() elif choice==2: read() elif choice==3: search() else: print("invalid input") ------------------------------------------------------------------------------- #Write a program to search a record using its roll number and display the name of student. If record not found then display appropriate message. #nested list import pickle def write(): f=open("sample.dat",'wb') rec=[[1,'sakshi',45],[2,'kiara',66],[3,'inaya',47],[4,'anjali',76]] #pre-set list pickle.dump(rec,f) print("added") f.close() def read(): print("reading...") f=open("sample.dat",'rb') p=pickle.load(f) #print(p) # will print the nested list #display element by element print("rno name marks") for i in p: print(" ",i[0],i[1]," ",i[2]) f.close() def search(): print("searching....") f=open("sample.dat",'rb') found=0 x=int(input("enter the rno you want to search:")) rec=pickle.load(f) #print(rec) #... will print nested list for i in rec: if x==i[0]: found=1 print("record found") print("name=",i[1],"marks=",i[2]) break if(found==0): print("record not found") f.close() print("*"*20,"MENU","*"*20) print("1.write\n2.read\n3.search") choice=int(input("enter your choice:")) if(choice==1): write() elif choice==2: read() elif choice==3: search() else: print("invalid input") ---------------------------------------------------------------------------------------------------- #Write a program to write and display the contents of a dictionary into a binary file. #only dictionary but multiple records import pickle def write(): f=open("maps.dat","ab") ch="y" while ch == "y": r=int(input("input enter rno ")) s=input("enter name ") m=int(input("input enter marks ")) d={"rno":r,"name":s,"MARKS":m} pickle.dump(d,f) # only 1 record dumped in file.loop repeats, next dumped. # dictionaries dont have append() function, so each record needs to be written separately #using loop ch=input("want to enter more rec ") f.close() def read(): f=open("maps.dat","rb") d={} try: while True: # as long as there is data in the file d=pickle.load(f) print(d['rno'],':',d['name']) #print(d) except EOFError: f.close() write() read() ------------------------------------------------------------------- #WAP to read,write and seach a record in a binary file using list of dictionaries. #binary file - list of dictionary
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t1="Ind-23" t2="" i=1 while i<len(t1): if t1[i]>="0" and t1[i]<="9": #50>=48 and 50<=57 51>=48 and 51<=57 val=int(t1[i]) val=val+2 t2=t1+str(val) #print(t1,val,t2) elif t1[i]>"A" and t1[i]<="Z": t2=t2+(t1(i+1)) else: t2=t2+"*" i+=1 print(t2) #A=65 a=97 0=48
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13
+1
12-IP-CS-COMPUTER NETWORK REVISIONS-23-24-QP-ANSKEY.pdf
278
14
12-IP-CS-MYSQL-TABLES REVISIONS-23-24-ANSKEY.pdf
275
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12-IP-CS-MYSQL-TABLES REVISIONS-23-24-QP.pdf
275
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12-CS-CHAPTERWISE MCQ.pdf
309
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12CS-REVISION MCQ-2324.pdf
436
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12 CS -IP - PYTHON INTERFACE WITH MYSQL.pdf
387
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import mysql.connector as mcr cn=mcr.connect(host='localhost',user='root',passwd='Admin') cr=cn.cursor() #Create and Use Database cr.execute('create database if not exists TEST') cr.execute('use TEST') #Create Table cr.execute('create table if not exists member(M_ID char(5),Name Varchar(30),Activity varchar(10))') #Inserting Records qry="insert into member values('M1001','Amina','Gym'),('M1002','Pratik','Gym')\ ,('M1003','Simon','Swimming'),('M1004','Rakesh','Gym'),('M1005','Avneet','Swimming')" cr.execute(qry) cr.execute('Select * from member where activity="Gym"') R=cr.fetchone() #print(R) for i in range(2): R=cr.fetchone() print(R[0],R[1],sep='#') ''' M1002#Pratik M1004#Rakesh '''
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CS Python Basics 1 : https://forms.gle/M6dDNphiHh4bRgxs8 Python Basics 2 : https://forms.gle/dUxG6ZHHXYknNLxS6 Python Basics 3 : https://forms.gle/jo5emGGiMy6Pwhft8 Python Basics 4 : https://forms.gle/APYRruoMjMszWr1Q6 Functions 1 : https://forms.gle/xoV6fstREXndY3CG8 Functions 2 : https://forms.gle/FFcMpV2ERrCNenK46 List : https://forms.gle/KdV4iz8Y765Z27Fc7 String : https://forms.gle/Te8nzz3iPcTHppji6 Tuple : https://forms.gle/iGd6KudqwmZSRzWi6 Dictionary : https://forms.gle/uUqc8vZdrc6FzgSG8 Data Structure 1 : https://forms.gle/BLob2Y7hxqKBszk28 Data Structure 2 : https://forms.gle/SSe8pJhpVberpZ7A9 Computer Networks 1 : https://forms.gle/PBYLuAKzRmZ7r9Rw7 Computer Networks 2 : https://forms.gle/nRWNqGaW6xFRMHiB6 Computer Networks 3 : https://forms.gle/gXHErV2oXfscFycq7 Binary File : https://forms.gle/yVaV2GhSEwKvu4w88 PT2 : https://forms.gle/uisopa6KWnHBuCAXA Sample QP : https://forms.gle/TQLs5f7BNGP5hXi86 Online Class : https://forms.gle/AtYV6o2pmCJFE2Wr9
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