Some basic exercises for the Python loop

#1:
name = input (' Please enter your identity ')
if name = = ' Egon ':
print ('--super admin ')
elif name = = ' Tom ':
print ('--general admin ')
elif name = = ' Jack,rain ':
print ('-to Business executives ')
elif Name = = ' other ':
print ('--normal user ')


#2
Today = input (' What's the day of the week? ')
if today = = ' Monday ' or today = = ' Tuesday ' or today = = ' Wednesday ' or today = = ' Thursday ' or today = = ' Friday ':
print (' work ')
elif today = = ' Saturday ' or today = = ' Sunday ':
print (' Out of the Waves ')


#3,
(1). Using while loop output 1 2 3 4 5 6 8 9
a=1
While a <11:
print (a)

# (2). Ask for 1-100 of all numbers and
sum=0
Count =1
While count <=:
sum + = Count
count + = 1
print (sum)

# (3). All odd numbers in the output 1-100
sum=0
Count =1
While count <=:
sum + = Count
count + = 2
print (sum)

# (4). All even numbers in the output 1-100
sum1=0
count1 =0
While count1 <=:
sum1 + = Count1
Count1 + = 2
print (SUM1)

# (5). Beg 1-2+3-4+5 ... 99 of all numbers of the and
# sum2=0
count2 = 0
While Count2 <100:
if COUNT2/2 = = 0: #偶数
sum + = Count2
elif COUNT2/2 = = 1: #奇数
Sum-= Count2
print (sum2)

#6. User Login (three chance retry)
Count3 =0
While Count3 <3:
user_name=input (' Please enter user name ')
pwd=int (Input (' Please enter password '))
if user_name = = ' Boss ' and pwd = = 123:
print (' login successful ')
 Break
Else:
print (' Login failed, please re-enter: ')

#7: guess Age game
#要求: Allow the user to try up to 3 times, 3 times without guessing the right, then directly exit, if guessed right, print congratulations message and exit
b1=0
While B1 <3:
Age = Int (input (' Please enter password '))
if Age = =:
print (' login successful ')
 Break
Else:
print (' Login failed, please re-enter: ')

#8: Guess the Age game upgrade version
#要求:
"allows users to try up to 3 times
after each attempt 3 times, if not guessed right, ask the user whether still want to continue to play, if answer Y or Y, continue to let it guess 3 times, to this reciprocating,
If you answer n or n, you exit the program how to guess the right, and then exit directly .
b2=0
While True:
if b2 = = 3:
Jixu = input (' You have guessed the wrong 3 times, do you still want to guess? y/n ')
if Jixu = = ' Y ':
b2 = 0
elif Jixu = = ' N ':
print (' exit successful ')
 Break
Else:
print (' invalid operation, please re-operate! ')
count = 3 # Input Other non-y/n string, return to continue selection guess or not
Continue
age = Int (input (' ask you to guess ages '))
if Age = =:
print (' Congratulations, guess the age! ')
 Break
Else:
print (' Wrong, please re-enter ')
B2 + = 1


#4
#编写计算器程序, requirements
1, user input quit quit the program
2, the program runs, let the user select the specific calculation operation is the addition or multiplication or division ... Then enter a number to perform the Operation
3, simple demonstration as follows, can be improved on this basis
msg= ""
1 Addition
2 Subtraction
3 Multiplication
4 Division
" "
Print (msg)
choice = input (' Please select the symbol (1-4) to be operated on: '). Strip ()
NUM1 = input (' Enter the first number to be calculated: '). Strip ()
num2 = input (' Enter a second number to be calculated: '). Strip ()
if choice = = ' 1 ':
res=int (NUM1) +int (num2)
print ('%s+%s=%s '% (num1,num2,res))
if choice = = ' 2 ':
res = int (NUM1)-int (num2)
print ('%s-%s=%s '% (NUM1, num2, res))
if choice = = ' 3 ':
res = int (NUM1) * INT (num2)
print ('%s*%s=%s '% (NUM1, num2, res))
if choice = = ' 4 ':
res=int (NUM1)/int (num2)
print ('%s/%s=%s '% (num1,num2,res))


#5, nested implementation based on for loop
5.1 printing 99 multiplication Table
For i in range (1,10):
For J in Range (1,i+1):
print ('%s*%s=%s '% (j,i,i*j), end= ') #九成九法则
print ()

#5.2 Printing Pyramids
y = 5
For x in range (1,y+1):
For i in range (y-x):
Print (', end= ') # Prints multiple spaces consecutively in a row
For J in Range (2*x-1):
print (' * ', end= ') #在一行中连续打印多个空格
print ()
print ('----------delimiter-------------')
"' #max_level =5
********* #current_level = 1, number of spaces =0,* =9
******* #current_level = 2, number of spaces =1,* =7
* * * * * #current_level = 3, number of spaces =2,* =5
* * * #current_level = 4, number of spaces =3,* =3
* #current_level = 5, number of spaces =4,* =1
#数学表达式
# Number of spaces =max_level-current_level spaces =current-1
# * # =2*current_level-1 * # =2*max_level-1 "
y=5
For x in range (1,y+1):
For i in range (x-1):
print (', end= ')
For J in Range (Y-x) +1:
print (' * ', end= ')
print ()

Some basic exercises for the Python loop