python:watch_file,copy,rename
本帖最後由 f29825604 於 19-7-30 11:21 編輯How do I watch a file for changes?回答17:Python copy files to a new directory and rename if file name already exists
回答:I always use the time-stamp - so its not possible, that the file exists already:
合併兩個檔案
#!python3
import os
import sys
import time
import shutil
import datetime
# 看'my_file.txt'發生變化時,
# 複製檔案copy(src_dir,dst_dir),
# 加上str(now)變化當下的時間重新命名
class Watcher(object):
running = True
refresh_delay_secs = 1
# Constructor
def __init__(self, watch_file, call_func_on_change=None, *args, **kwargs):
self._cached_stamp = 0
self.filename = watch_file
self.call_func_on_change = call_func_on_change
self.args = args
self.kwargs = kwargs
# Look for changes
def look(self):
stamp = os.stat(self.filename).st_mtime
if stamp != self._cached_stamp:
self._cached_stamp = stamp
# File has changed, so do something...
now = str(datetime.datetime.now())[:19]
now = now.replace(":","_")
src_dir="C:\\Users\\Asus\\Desktop\\Versand Verwaltung\\Versand.xlsx"
dst_dir="C:\\Users\\Asus\\Desktop\\Versand Verwaltung\\Versand_"+str(now)+".xlsx"
shutil.copy(src_dir,dst_dir)
print('File changed'+str(now))
if self.call_func_on_change is not None:
self.call_func_on_change(*self.args, **self.kwargs)
# Keep watching in a loop
def watch(self):
while self.running:
try:
# Look for changes
time.sleep(self.refresh_delay_secs)
self.look()
except KeyboardInterrupt:
print('\nDone')
break
except FileNotFoundError:
# Action on file not found
pass
except:
print('Unhandled error: %s' % sys.exc_info())
# Call this function each time a change happens
def custom_action(text):
print(text)
watch_file = 'my_file.txt'
# watcher = Watcher(watch_file)# simple
watcher = Watcher(watch_file, custom_action, text='yes, changed')# also call custom action function
watcher.watch()# start the watch going
本帖最後由 f29825604 於 19-8-19 20:06 編輯
#監看d:\temp下檔案的變化事件#移動,新增,刪除,修正#from watchdog.observers import Observer
from watchdog.events import *
import time
class FileEventHandler(FileSystemEventHandler):
def __init__(self):
FileSystemEventHandler.__init__(self)
def on_moved(self, event):
if event.is_directory:
print("directory moved from {0} to {1}".format(event.src_path,event.dest_path))
else:
print("file moved from {0} to {1}".format(event.src_path,event.dest_path))
def on_created(self, event):
if event.is_directory:
print("directory created:{0}".format(event.src_path))
else:
print("file created:{0}".format(event.src_path))
def on_deleted(self, event):
if event.is_directory:
print("directory deleted:{0}".format(event.src_path))
else:
print("file deleted:{0}".format(event.src_path))
def on_modified(self, event):
if event.is_directory:
print("directory modified:{0}".format(event.src_path))
else:
print("file modified:{0}".format(event.src_path))
if __name__ == "__main__":
observer = Observer()
event_handler = FileEventHandler()
observer.schedule(event_handler,"d:/temp",True)
observer.start()
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
observer.stop()
observer.join()
本帖最後由 f29825604 於 21-1-10 16:04 編輯
sdsaeleader with Pandas/Numpy
在eleader程式交易中，除了提供類似easy_language的語法之外，其實內容是可用Python的語法。
Python File Write
ExampleOpen the file "demofile3.txt" and overwrite the content:
感謝 生魚片交易訊號應該也可以試試看
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