类似Little Alchemy的元素合成程序：while循环在def函数中失效求助

Hey there! Let's work through the two problems you're facing with your Little Alchemy-style project—this sounds like a super fun build, so let's get it sorted.

1. Custom Function Not Repeating in While Loop (Terminal Goes Blank) #

It sounds like your loop is either getting stuck waiting for input, or the function's logic is causing the loop to halt unexpectedly. Here are the most common fixes:

• Add an explicit exit condition: If your while True loop doesn't have a way for the user to break out, it might seem like it's stuck, but it's probably just waiting for input. Try adding a prompt to let users quit or continue after each synthesis. For example:

  def combine_elements():
      elem1 = input("Enter first element (or 'quit' to exit): ")
      if elem1.lower() == 'quit':
          return False  # Signal the loop to stop
      elem2 = input("Enter second element: ")
      # Your synthesis logic here—check if elem1 + elem2 makes a new element
      print(f"You combined {elem1} and {elem2}!")
      return True
  
  running = True
  while running:
      running = combine_elements()
  

• Check for input blocking: If your function uses input() but isn't handling cases where the user enters invalid data, it might not progress. Make sure you're validating inputs (like checking if the elements exist in your discovered list) and giving clear feedback so the user knows what to do next.

• Debug with print statements: Add a quick print line at the start of your loop or function to confirm it's actually running each time. For example, print("\nReady for another combination!") at the top of the loop will let you see if the loop is repeating as expected.

2. Removing [] Brackets from List Displays #

If you're seeing square brackets when you print your list of elements, that's because you're printing the list object directly instead of formatting its contents. Here's how to fix it:

• Join list elements into a clean string: Use str.join() to turn your list into a bracket-free, human-readable string. For example:

  discovered_elements = ["Earth", "Fire", "Water"]
  # Bad: Prints with brackets and quotes
  print(discovered_elements)  # Output: ['Earth', 'Fire', 'Water']
  
  # Good: Prints a clean comma-separated string
  print("Discovered elements: " + ", ".join(discovered_elements))
  # Output: Discovered elements: Earth, Fire, Water
  

• Format individual elements in results: If you're displaying elements in a synthesis outcome, make sure you're accessing list items directly instead of printing the whole list. For example, if you have a recipe like {"Fire", "Water": "Steam"}, print f"{elem1} + {elem2} = {new_element}" instead of printing the list of ingredients.

If you can share a small snippet of your actual code, we can narrow this down even more—but these fixes should cover the most common cases.

内容的提问来源于stack exchange，提问作者Gurneyguy