这是我想做的事情：
1）我使用Twitter API一次存储10条帖子，以流式发送帖子。它们被存储到名为lrgDict.txt的文本文件中
import tweepy,datetime, sys, os, time, pprint
from tweepy.api import API
consumer_key ""
consumer_secret=""
access_token=""
access_token_secret=""
key = tweepy.OAuthHandler(consumer_key, consumer_secret)
key.set_access_token(access_token, access_token_secret)
class TwitterAPIStreamDictionary(tweepy.StreamListener):
output = {}
def __init__(self, api=None):
print(datetime.datetime.time(datetime.datetime.now()))
self.api = api or API()
self.j = 0
self.k = 10
def on_status(self, status):
self.output[status.id] = {
'text':status.text.encode('utf-8'),
'user':status.user.screen_name.encode('utf-8'),
'place':status.place,
'location':status.user.location}
output = open('dictLrg.txt', 'ab')
for tweet in self.output:
output.write( "\n".encode(encoding='utf-8') + "User: ".encode(encoding='utf-8') + self.output[tweet]['user'] + "\n".encode(encoding='utf-8') + "Text: ".encode(encoding='utf-8') + self.output[tweet]['text'] + "\n".encode(encoding='utf-8'))
pprint.pprint("User: ".encode(encoding='utf-8') + self.output[tweet]['user'] + " Text: ".encode(encoding='utf-8') + self.output[tweet]['text'])
output.flush()
output.close()
if self.j < self.k:
self.j = self.j + 1
return True
else:
print('Search Complete')
print(datetime.datetime.time(datetime.datetime.now()))
return False
def on_error(self, status_code):
print(status_code)
return True
def on_timeout(self):
print('Timeout')
return True
2）使用PyQT，我正在调用该类来运行，检索帖子，然后在TextEdit中显示它们。
from PyQt4 import QtCore, QtGui
import sys, tweepy, TwitterAPIStreamSentiment, time, os
from tweepy.api import API
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_Form(QtGui.QWidget):
def __init__(self):
QtGui.QWidget.__init__(self)
self.setupUi(self)
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(800, 600)
self.verticalLayout_2 = QtGui.QVBoxLayout(Form)
self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
self.verticalLayout = QtGui.QVBoxLayout()
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.searchText = QtGui.QLineEdit(Form)
self.searchText.setObjectName(_fromUtf8("searchText"))
self.verticalLayout.addWidget(self.searchText)
self.submitButton = QtGui.QPushButton(Form)
self.submitButton.setObjectName(_fromUtf8("submitButton"))
self.verticalLayout.addWidget(self.submitButton)
self.resultsText = QtGui.QPlainTextEdit (Form)
self.resultsText.setReadOnly(True)
self.resultsText.setObjectName(_fromUtf8("resultsText"))
self.verticalLayout.addWidget(self.resultsText)
self.verticalLayout_2.addLayout(self.verticalLayout)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(_translate("Form", "Form", None))
self.submitButton.setText(_translate("Form", "Submit", None))
self.submitButton.clicked.connect(self.printResults)
def printResults(self):
stream = tweepy.streaming.Stream(TwitterAPIStreamSentiment.key, TwitterAPIStreamSentiment.TwitterAPIStreamDictionary())
stream.filter(track=[str(self.searchText.text())], async='true')
file = open('dictLrg.txt', 'r', encoding="utf8").read()
QtCore.QTimer.singleShot(15000, lambda: self.resultsText.insertPlainText(file))
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
ex = Ui_Form()
ex.show()
sys.exit(app.exec())
我需要什么帮助：
1）如何在PyQT调用的班级完成10个帖子的存储后知道它？
2）将PyQT附加到textEdit后，如何重复该过程？
3）这是我的第一个Python项目，热烈欢迎任何建设性的批评。
P.s的最终目标是阅读推文并在帖子上进行实时情绪分析。
谢谢你们！
最佳答案
您基本上需要实现信号和插槽，并且我举了一个例子来说明这一点，但是该例子是基于您的逻辑而不是使用twiter api的
from PyQt4 import QtGui, QtCore
import sys
class FetchData(QtCore.QObject):
fetchFinished = QtCore.pyqtSignal(str)
def __init__(self, *args):
super(FetchData, self).__init__(*args)
@QtCore.pyqtSlot()
def run(self, searchStr):
rtString = "Some data from no where : %s" % searchStr
self.fetchFinished.emit(str(rtString))
class BASEGUICLS(QtGui.QDialog):
def __init__(self,parent=None):
super(BASEGUICLS, self).__init__(parent)
self.verticalLayout = QtGui.QVBoxLayout()
self.searchString = QtGui.QLineEdit()
self.resultsText = QtGui.QPlainTextEdit()
self.fetchButton = QtGui.QPushButton("Fetch")
self.stopButton = QtGui.QPushButton("Stop")
self.verticalLayout.addWidget(self.searchString)
self.verticalLayout.addWidget(self.resultsText)
self.verticalLayout.addWidget(self.fetchButton)
self.verticalLayout.addWidget(self.stopButton)
self.setLayout(self.verticalLayout)
self.fetchData = FetchData()
self.fetchData.fetchFinished.connect(self.updateResult)
self.fetchButton.clicked.connect(self.getData)
self.stopButton.clicked.connect(self.stopFetch)
self.timer = QtCore.QTimer(self)
self.timer.timeout.connect(self.refreshResult)
def getData(self):
self.timer.start(500)
def refreshResult(self):
searchStr = str(self.searchString.text())
if not searchStr:
self.stopFetch()
raise RuntimeError("Missing Search String")
self.fetchData.run(searchStr)
def stopFetch(self):
self.timer.stop()
def updateResult(self, value):
self.resultsText.appendPlainText(value)
def main():
app = QtGui.QApplication(sys.argv)
ex = BASEGUICLS(None)
ex.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
关于python - PyQT从.txt文件读取和更新TextEdit，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/33569643/