程序卡在反向python猜谜游戏上

Question

My program is stuck while it tells you to think of a number in the range of selected numbers and I'm unsure how to fix this.

I'm not entirely sure what I'm doing even but the start of the program works properly.

from random import randrange
import time


def guessNumber(min_no, max_no):
   try:
      return randrange(min_no, max_no)
   except ValueError:
       return min_no
   left = 0
   right = len(L)-1
   while left<=right:   
      m = (left+right)//2
      if x == L[m]:
         return m
      elif x < L[m]:
         right = m-1
      else:  #  L[m] < x 
         left = m+1


def userNoInput(msg):
   while 1:
      try:
         return int(input(msg))
      except:
         print("Numbers Only !")
         sys.exit(0)

print("Enter two numbers, low then high.")
min_no = userNoInput("low = ")
max_no = userNoInput("high = ")
print ("Think of a number in the range %d and %d."%(min_no, max_no))
max_no += 1

while True:
   guess = guessNumber(min_no, max_no)
count = 0
L = []
for i in range(low, high+1):
   L.append(i)

while True:
   print("Is your number Less than, Greater than, or Equal to %d ?") % (L[(int(len(L)/2))])
   guess = guessNumber(low, high)
   guess = input("Type 'L', 'G' or 'E': ")
   guess = guess.upper()
   if guess == 'E':
      break
   elif guess == 'L': guess < number
   elif guess == 'G': guess > number

   else:
      print (guess)

print ("Your number is" + guess + "." + "I Found it in" + number + "guesses.")

desired output:

Enter two numbers, low then high.
low = 2
high = 18
Think of a number in the range 2 to 18.
Is your number Less than, Greater than, or Equal to 10?
Type 'L', 'G' or 'E': g
Is your number Less than, Greater than, or Equal to 14?
Type 'L', 'G' or 'E': L
Is your number Less than, Greater than, or Equal to 12?
Type 'L', 'G' or 'E': L
Your number is 11. I found it in 3 guesses.

Answer 1

Yep, the infinite loop in over first guessing caused program to hang. There should be only one event loop, something like this:

from random import randrange
import time


def guess_number(min_no, max_no):
   return randrange(min_no, max_no)


def user_num_input(msg):
   try:
      return int(raw_input(msg))
   except ValueError:
      print('Numbers Only!')
      sys.exit(1)


def get_hint(current_guess):
   return raw_input('Is your number Less than, Greater than, or Equal to %d? (L, G, E): ' % current_guess)


print('Enter two numbers, low then high.')
min_no = user_num_input('low = ')
max_no = user_num_input('high = ')
assert max_no >= min_no
print ('Think of a number in the range %d and %d.' % (min_no, max_no))

iteration = 1
while True:
   guess = guess_number(min_no, max_no)
   hint = get_hint(guess)
   while hint not in ['E', 'L', 'G']:
      print('You gave unknown answer. Please retry.')
      hint = get_hint(guess)

   if hint == 'E':
      break
   elif hint == 'L': 
      max_no = guess
   elif hint == 'G': 
      min_no = guess
   else:
      raise ValueError('Unreachable!')

   iteration += 1

print ('Your number is %d. I found it in %d guesses.' % (guess, iteration))

Answer 2

This code will do it for you . There were many mistakes in that code of yours :-

1.) Infinite While loop ( while True: guess = guessNumber(min_no, max_no) ) .

2.) You dont need lists/arrays for this problem.

3.) while True: guess = guessNumber(min_no, max_no) , this function is wrong . since you are returning the value ,it is not going past the except statement.

4.) No need of def userNoInput(msg): function , anyways no issues.

5.) The last line ( Print statement is wrong too )

Hoping this will help you

PS:- Just a suggestion , whenever you get an infinite loop or some issues like that , you should firstly try yourself by printing statements inside loop and see where the issue is .

from random import randrange
import time


def guessNumber(min_no, max_no):
   left = min_no
   right = max_no
   if left == right:
      return left
   m = (left+right)/2
   return m

def userNoInput(msg):
   while 1:
      try:
          return int(input(msg))
      except:
          print("Numbers Only !")
          sys.exit(0)

print("Enter two numbers, low then high.")
min_no = userNoInput("low = ")
max_no = userNoInput("high = ")
# print min_no,max_no
print ("Think of a number in the range %d and %d."%(min_no, max_no))
max_no += 1

count = 0

while True:
   count+=1
   guess = guessNumber(min_no, max_no)
   print("Is your number Less than, Greater than, or Equal to %d ?") %guess
   temp = raw_input("Type 'L', 'G' or 'E': ")
   temp = temp.upper()
   if temp == 'E':   
       break
   elif temp == 'L':
       max_no = guess-1;

   elif temp == 'G':
       min_no = guess+1;

print "Your number is %r . I Found it in %r guesses." %(guess,count)