Python exercises (1) and Python exercises (

Python exercises (1) and Python exercises (

Return all positive integers ranging from 1 to 10 except 7]

start = 1while True:     if start ==7:          start += 1          continue     print(start)     if start ==10:     break     start +=1

  [Calculate the sum of all integers within 1] 

sum = 0start = 1while True:     print(start )     sum = sum+start     if start == 100          break     start  += 1

 

[Output all odd numbers in 1] 

start = 1flag = Truewhile flag:    if start%2==1:        print(start)    else:        pass    if start == 100:        flag = False    else:        start += 1print("end")

[Output all the even numbers in 1] 

start = 1flag = Truewhile flag:    if start%2!=1:        print(start)    else:        pass    if start == 100:        flag = False    else:        start += 1print("end")

  [Calculate the sum of all numbers of 1-2 + 3-4... + 99] 

start = 1sum = 0flag = Truewhile flag:    if start%2==1:        sum = sum+start    else:        sum = sum-start    if start == 99:        flag = False    else:        start += 1print(sum)

  [User Logon (three retries )] 

Start = 1 flag = Truewhile flag: name = input ("Username:") pwd = input ("Password :") if name = "zjw" and pwd = "123": print ("congratulations, login successful! ") Break else: print (" incorrect user name or password! Try again ~ ") If start = 3: print (" Login Failed! ") Flag = False else: start + = 1