我正在嘗試編寫一個程序來使用全局熱鍵進行屏幕截圖。下面是對應的代碼：from datetime import datetimeimport osfrom pynput import keyboardimport pyautoguiimport pathlibdef on_activate(): today = datetime.now() d = today.strftime("%Y-%m-%d-%H-%M-%S") myScreenshot = pyautogui.screenshot(region=(200,200, 1720, 800)) time_stamp = '{:%y%d%m}'.format(today) fpath = pathlib.Path("C:","Users","Desktop","TestScreenCap", time_stamp) if not os.path.exists(fpath): os.makedirs(fpath) myScreenshot.save(pathlib.Path(fpath,d,".jpg"))def for_canonical(f): return lambda k: f(l.canonical(k))hotkey = keyboard.HotKey( keyboard.HotKey.parse('<ctrl>+<alt>+h'), on_activate)with keyboard.Listener( on_press=for_canonical(hotkey.press), on_release=for_canonical(hotkey.release)) as l: l.join()錯誤信息：Unhandled exception in listener callbackTraceback (most recent call last): File "C:\Users\PycharmProjects\untitled1\venv\lib\site-packages\PIL\Image.py", line 2138, in save format = EXTENSION[ext]KeyError: ''The above exception was the direct cause of the following exception:Traceback (most recent call last): File "C:\Users\PycharmProjects\untitled1\venv\lib\site-packages\pynput\_util\__init__.py", line 211, in inner return f(self, *args, **kwargs) File "C:\Users\PycharmProjects\untitled1\venv\lib\site-packages\pynput\keyboard\_win32.py", line 280, in _process self.on_press(key) File "C:\Users\PycharmProjects\untitled1\venv\lib\site-packages\pynput\_util\__init__.py", line 127, in inner if f(*args) is False: File "C:/Users/PycharmProjects/untitled1/123.py", line 18, in <lambda> return lambda k: f(l.canonical(k)) File "C:\Users\PycharmProjects\untitled1\venv\lib\site-packages\pynput\keyboard\__init__.py", line 182, in press
1 回答
Smart貓小萌
TA貢獻1911條經驗 獲得超7個贊
這里是固定代碼：
from datetime import datetime
import os
from pynput import keyboard
import pyautogui
import pathlib
def on_activate():
today = datetime.now()
d = today.strftime("%Y-%m-%d-%H-%M-%S")
myScreenshot = pyautogui.screenshot(region=(200,200, 1720, 800))
time_stamp = '{:%y%d%m}'.format(today)
fpath = pathlib.Path("C:\\","Users","Desktop","TestScreenCap", time_stamp)
if not os.path.exists(fpath):
os.makedirs(fpath)
myScreenshot.save(pathlib.Path(fpath,d + ".jpg"))
def for_canonical(f):
return lambda k: f(l.canonical(k))
hotkey = keyboard.HotKey(
keyboard.HotKey.parse('<ctrl>+<alt>+h'),
on_activate)
with keyboard.Listener(
on_press=for_canonical(hotkey.press),
on_release=for_canonical(hotkey.release)) as l:
l.join()
問題是您正在使用：
myScreenshot.save(pathlib.Path(fpath,d,".jpg"))
該函數pathlib.Path(fpath,d,".jpg")將字符串添加\到每個字符串的末尾，因此您嘗試保存文件的路徑是：
C:Users\Desktop\TestScreenCap\200309\2020-09-03-16-50-20\.jpg
正如您所看到的，文件名是引發異常的擴展名。
只需替換為：myScreenshot.save(pathlib.Path(fpath,d + ".jpg"))
指定路徑的另一個問題是它C:被解釋為Drive，所以當你保存函數時，保存到你的程序當前運行的路徑，而不是真正的指定路徑。要修復此部分，只需替換C:為C:\\.
閱讀您的代碼，我認為您希望將屏幕截圖保存在當前用戶桌面中，如果是這樣，請將行：替換為fpath = pathlib.Path("C:\\","Users","Desktop","TestScreenCap", time_stamp)并fpath = pathlib.Path(os.path.join(os.path.join(os.environ['USERPROFILE']), 'Desktop'), time_stamp)在頂部添加import os. 有了這個，你就不需要關心這條道路的正確世代。
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