Python continue from input with the space key

问题

I'm making a typing speed test game and trying to make it so that when a user is typing into a python input(), it can be submitted by them pressing space rather than just enter, on Windows. My code is similar to the following:

score = 0
start_time = int(time.time())
characters = 0
words = 0
current_word = random.choice(WORDS)
next_word = random.choice(WORDS)
while (int(time.time()) - start_time) <= TIME_LIMIT:
    os.system('cls')
    print(f"Your word is {current_word}")
    print(f"The next word will be {next_word}")
    print(f"Your current score is {score}")
    attempt = input("> ")
    if attempt.lower() == current_word.lower():
        score = score + 1
        words = words + 1
        characters = characters + len(current_word)
    current_word = next_word
    next_word = random.choice(WORDS)

Is there any way for this to work or is it best to maybe create my own input function?

回答1:

Solved this by creating my own input function as below:

def custom_input(prefix=""):
    """Custom string input that submits with space rather than enter"""
    concatenated_string = ""
    sys.stdout.write(prefix)
    sys.stdout.flush()
    while True:
        key = ord(getch())
        # If the key is enter or space
        if key == 32 or key == 13:
            break
        concatenated_string = concatenated_string + chr(key)
        # Print the characters as they're entered
        sys.stdout.write(chr(key))
        sys.stdout.flush()
    return concatenated_string

回答2:

The following code is modified from the answer How to code autocompletion in python? given by @gandi.

It can get input from user in real time. Backspace will move back cursor for a character.

Some other good references

Python read a single character from the user

import termios, os, sys

def flush_to_stdout(c):
    if c == b'\x7f':
        sys.stdout.write("\b \b")
    else:
        sys.stdout.write(c.decode("utf-8"))
        sys.stdout.flush()

def getkey():
    fd = sys.stdin.fileno()
    old = termios.tcgetattr(fd)
    new = termios.tcgetattr(fd)
    new[3] = new[3] & ~termios.ICANON & ~termios.ECHO
    new[6][termios.VMIN] = 1
    new[6][termios.VTIME] = 0
    termios.tcsetattr(fd, termios.TCSANOW, new)
    c = None
    try:
        c = os.read(fd, 1)       
        flush_to_stdout(c)
    finally:
        termios.tcsetattr(fd, termios.TCSAFLUSH, old)
    if c == b'\x7f': # Backspace/delete is hit
        return "delete"
    return c.decode("utf-8")

def get_word():
    s = ""
    while True:
        a = getkey()
        # if ENTER or SPACE is hit
        if a == " " or a == "\n": 
            return s
        elif a == "delete":
            s = s[:-1]
        else:
            s += a


if __name__ == "__main__":
    while True:
        print(get_word())

来源：https://stackoverflow.com/questions/47954657/python-continue-from-input-with-the-space-key

标签

python

input

key-bindings