我是一名初学者，正在为python / flask中的预定推文和自动转发编写一个小型推特工具。
我遇到了在后台运行的进程问题。
我希望预定的推文和转推在后台同时为给定用户工作。
我希望能够相互分开运行转发/预定推文的这些后台进程。
您如何更改以下代码才能实现此目标？
如果您现在查看下面的代码，它可以正常工作，但用户无法同时运行预定的推文和转发。此外，如果用户决定终止其中一个进程，那么让我们说转发也会终止另一个进程（预定的推文），反之亦然。
我想过将给定进程的标识数据放入数据库并在需要终止时从数据库中调用这些标识数据，而不是使用cookie会话，但我不知道如何实现这个想法在代码中。
import ........
mysql = MySQL()
app = Flask(__name__)
app.secret_key = 'xxx'
app.config['MYSQL_DATABASE_USER'] = 'xxx'
app.config['MYSQL_DATABASE_PASSWORD'] = 'xxx'
app.config['MYSQL_DATABASE_DB'] = 'xxx'
app.config['MYSQL_DATABASE_HOST'] = '0.0.0.0'
mysql.init_app(app)
@app.route('/showSignin')
def showSignin():
if session.get('user'):
return redirect('/userHome')
else:
return render_template('signin.html')
@app.route('/showscheduletweets')
def showscheduletweets():
if session.get('user'):
return render_template('scheduletweets.html')
else:
return render_template('signin.html')
@app.route('/validateLogin',methods=['POST'])
def validateLogin():
try:
_username = request.form['inputEmail']
_password = request.form['inputPassword']
# connect to mysql
con = mysql.connect()
cursor = con.cursor()
cursor.callproc('sp_validateLogin',(_username,))
data = cursor.fetchall()
if len(data) > 0:
if check_password_hash(str(data[0][3]),_password):
session['user'] = data[0][0]
consumerkey = data [0][4]
consumersecret = data [0][5]
accesstoken = data [0][6]
tokensecret = data [0][7]
twitter = Twython(consumerkey, consumersecret, accesstoken, tokensecret)
twitter.update_status(status="xxx says hello.")
return render_template('userHome.html')
else:
return render_template('error.html',error = 'Wrong Email address or Password.')
else:
return render_template('error.html',error = 'Wrong Email address or Password.')
except Exception as e:
return render_template('error.html',error = str(e))
finally:
cursor.close()
con.close()
#schedule tweets
@app.route('/scheduletweets',methods=['POST'])
def scheduletweets():
if session.get('user'):
_username = request.form['inputEmail']
con = mysql.connect()
cursor = con.cursor()
cursor.callproc('sp_GetTwitter', (_username,))
data = cursor.fetchall()
session['user'] = data[0][0]
consumerkey = data [0][4]
consumersecret = data [0][5]
accesstoken = data [0][6]
tokensecret = data [0][7]
twitter = Twython(consumerkey, consumersecret, accesstoken, tokensecret)
tweet1 = request.form['inputTweet1']
tweet2 = request.form['inputTweet2']
tweet3 = request.form['inputTweet3']
tweet4 = request.form['inputTweet4']
tweet5 = request.form['inputTweet5']
tweet6 = request.form['inputTweet6']
Hash1 = request.form['inputHash1']
Hash2 = request.form['inputHash2']
Hash3 = request.form['inputHash3']
Hash4 = request.form['inputHash4']
fruits = [Hash1, Hash2, Hash3, Hash4]
list = [tweet1, tweet2, tweet3, tweet4, tweet5, tweet6]
def workit():
while True:
try:
if len(list) > 0:
z = random.randint(1, len(fruits))
a = random.sample(fruits, z)
b=" ".join(str(x) for x in a)
toTweet = list[random.randint(0,len(list))-1] + " " + b
twitter.update_status(status=toTweet)
time.sleep(10)
else:
twitter.update_status(status="Oh dear... I'm afraid I'm rather empty =(")
break
except TwythonError as e:
print (e)
if 'work_process' not in session:
process = Process(target=workit)
process.start()
pid = process.pid
parent_pid = psutil.Process(process.pid).parent().pid
session['work_process'] = (parent_pid, pid)
return redirect('/showscheduletweets')
#retweets
@app.route('/retweet',methods=['POST'])
def retweet():
if session.get('user'):
_username = request.form['inputEmail']
con = mysql.connect()
cursor = con.cursor()
cursor.callproc('sp_GetTwitter', (_username,))
data = cursor.fetchall()
session['user'] = data[0][0]
consumerkey = data [0][4]
consumersecret = data [0][5]
accesstoken = data [0][6]
tokensecret = data [0][7]
Retweet1 = request.form['inputRetweet1']
Retweet2 = request.form['inputRetweet2']
Retweet3 = request.form['inputRetweet3']
Retweet4 = request.form['inputRetweet4']
Exclude1 = request.form['inputExclude1']
Exclude2 = request.form['inputExclude2']
def work():
twitter = Twython(consumerkey, consumersecret, accesstoken, tokensecret)
naughty_words = [Exclude1, Exclude2]
good_words = [Retweet1, Retweet2, Retweet3, Retweet4]
filter = " OR ".join(good_words)
blacklist = " -".join(naughty_words)
keywords = filter +" -"+ blacklist
print(keywords)
while True:
search_results = twitter.search(q=keywords, count=10)
try:
for tweet in search_results["statuses"]:
try:
twitter.retweet(id = tweet["id_str"])
time.sleep(60)
except TwythonError as e:
print (e)
except TwythonError as e:
print (e)
if 'work_process' not in session:
process = Process(target=work)
process.start()
pid = process.pid
parent_pid = psutil.Process(process.pid).parent().pid
session['work_process'] = (parent_pid, pid)
return redirect('/showretweet')
#terminating scheduled tweets and retweets
@app.route('/stoptweet', methods=['POST'])
def stoptweet():
if 'work_process' in session:
parent_pid, pid = session['work_process']
try:
process = psutil.Process(pid)
if process.parent().pid == parent_pid:
process.terminate()
except psutil.NoSuchProcess:
pass
session.pop('work_process')
return render_template('index.html')
else:
return render_template('index.html')
if __name__ == '__main__':
app.run(host=os.getenv('IP', '0.0.0.0'),port=int(os.getenv('PORT', xxx)))