input-output condition determination cycle python

1, conditional

score = int (input ( "Please enter student achievement:")) 
IF Score> 100 and Score <0: 
    Print ( "Please enter the correct score") 
elif Score <= 100 and Score> = 90: 
    Print ( "excellent" ) 
elif Score <90 and Score> = 80: 
    Print ( "good") 
elif Score <80 and Score> = 60: 
    Print ( "pass") 
the else: 
    Print ( "fail")

2, while loop 

count = 0

COUNT the while <. 4: 
    Print (COUNT) 
    COUNT = COUNT +. 1 

# break cycle is ended immediately break is encountered 
# continue cycling encountered in the present cycle ends continue 
print ( '------------ ---------------- ') 

Import Random 
Number = the random.randint (1,100) 
Print (Number) 
COUNT = 0 
the while COUNT <. 7: 
    GUESS = int (iNPUT ( "Please enter a a random number of 1 to 100: ")) 
    COUNT = COUNT +. 1 
    IF gUESS> number: 
        Print (" big guess ") 
    elif gUESS <number: 
        Print (" guess small ") 
    elif gUESS == number: 
        Print (" guessed ") 
        BREAK 
    # IF COUNT = 7:! 
    # the Continue 
    # the else: 
    # Print (" run out of the number of errors ")
# Directly in the same level while adding else, after the end of normal while loop will execute else in the code directly 
else: 
    Print ( "run out of the number of errors")

3、continue

number = 0
while number < 10:
    number = number + 1
    if number%2==0:
        continue
    print(number)

4, for cycle, print, output string 
Import datetime 
for I in Range (. 4): 
    Print ( "first", i + 1, "cycle", sep = "") #print plurality of connection must be used as a spacer sep Fu 
Print ( "-----------------------") 
# string formatting 
username = 'linqian' 
DATE = datetime.datetime.today () 
Print ( of the type (DATE)) 
# msg = 'welcome' + username + 'sign in' + 'today' + DATE 
msg2 = 'Welcome to% s login, today is% s'% (username, DATE) 
# Print (msg) 
Print ( "-----------------------") 
Print (msg2)