Python Introductory Exercises

1. Use while loop input 1 2 3 4 5 6 8 9 10

Code:

0  While I <:    1    if7:        continue      Print (i)

Results:

2. For all numbers of 1-100

Code:

i = 0sum = 0while i<=100:i+=1sum = sum+iprint (sum)

Results:

3. All odd numbers in output 1-10:

i = 0while I < 9:i + = 1if I% 2 = = 1:print (i)

Results:

4. All even numbers in the output 1-100

0  while  One :     1    if 2 0 :        print (i)

Results:

5, Beg 1-2+3-4+5 ... 99 of all numbers of the and

i =0J_sum=0O_sum=0sum=0 whileI < About: I+=1    ifI2==1: J_sum= J_sum +IifI2==0: O_sum= O_sum +I sum=j_sum-o_sumprint (j_sum) print (o_sum) print (sum)

Results:

6. User Login (three chance retry)

A = 0while a < 3:a +=1username = input ("Please enter your user name:") Password = input ("Please enter your password:") if username = = ' Wang ': if password = = ' n An ':p rint ("Login succeeded") Breakelse:print ("Login Failed") else:print ("Rewrite input")

Results:

#输入错误:

#输入成功:

Python Introductory Exercises