signals and slots
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Hi All,
a question regarding pyqtSignal.
in one of m threads I'm declaring a signal:
finished = pyqtSignal(list)
and at the end of the thread I'm emitting the signal to indicate a thread has ended and among that I'm passing a list:
self.finished.emit(self.cmd_log)in my main window I'm setting :
self.thread_ver.finished.connect(lambda log: self.on_finished(log, "ver"))
the finished.connect is calling self.on_finished() and passing log as the cmd_log signal that was emitted in the thread and a string.
during the run I get:
TypeError: <lambda>() missing 1 required positional argument: 'log'def on_finished(self, log, type): if type == "ver": self.btub_ver.create_graph() self.pb_eye_ver_run.setStyleSheet('QPushButton {color: green}') self.btub_ver.add_lane_overlay(self.bitmap, self.label_eye_lanes_all, self.label_tab_eye_all) else: self.btub.create_graph() self.pb_eye_run.setStyleSheet('QPushButton {color: green}') self.btub.add_lane_overlay(self.bitmap, self.label_eye_lanes_all, self.label_tab_eye_all) for line in log: self.te_log.append(line)any idea why is happening? in a previous version I didnt user the extra string "ver"
I used self.thread_ver.finished.connect(lambda: self.on_finished) and it worked OKManny thanks
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Hi and welcome to devnet,
Which version of Python are you using ?
Which version of PyQt ? -
Can you provide a full minimal script that triggers this issue ?
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@SGaist
many thanks for assisting me. I hope you were refering to the followingworker class:
import constant from time import sleep from math import log10 from plot_graph import plot_graph import matplotlib.pyplot as plt from PyQt5.QtWidgets import QLabel, QWidget, QTextEdit from PyQt5.QtGui import QPixmap from PyQt5.QtCore import QObject, pyqtSignal class bathtub(QObject): err_counters = None word_counters = None bit_counters = None ber_counters = None pi_pos = None done_dwelling = None spi_if = None plot_list = None plots = None progress_val = 0 cmd_log = [] finished = pyqtSignal(list) progress = pyqtSignal(int) def __init__(self, die_offset, d2d_ser, spi_if, eye_tab, ber_target, lanes_bitmap): super().__init__() self.pri_tx = die_offset.pri_tx self.pri_rx = die_offset.pri_rx self.sec_tx = die_offset.sec_tx self.sec_rx = die_offset.sec_rx self.d2d_ser = d2d_ser #self.lanes = lanes self.spi_if = spi_if #self.te_log = te_log self.eye_tab = eye_tab self.ber_target = ber_target self.lanes_bitmap = lanes_bitmap # def build_bathtub(self): def run(self): self.init_arrays() self.disable_prbs_checker() # disable automatically clear the counters self.pi_override_and_record_lanes() self.set_prbs32_lanes() self.move_pi_to_corner_pos("dec")#decrementing the pi to PI_LEFT_MARGINS self.sweep_pi_pos("inc")#sweep the pi position up to the center self.move_pi_to_corner_pos("inc") # rementing the pi to PI_LEFT_MARGINS self.sweep_pi_pos("dec") # sweep the pi position up to the center self.restore_system() #self.create_graph() self.finished.emit(self.cmd_log) self.cmd_log.clear()Main Window:
def pb_eye_run_handler(self): self.te_log.clear()# later will be replaced by writing to file self.thread = QThread() self.btub = bathtub(offset, self.d2d_ser, self.spi_if, self.tab_eye, float(self.le_ber_target.text()), self.lanes_bitmap) self.btub.moveToThread(self.thread) self.thread.started.connect(self.btub.run) self.btub.finished.connect(self.thread.quit) self.btub.finished.connect(self.btub.deleteLater) self.btub.progress.connect(lambda progress: self.on_progress("", progress)) self.thread.finished.connect(self.thread.deleteLater) self.pb_eye_run.setStyleSheet('QPushButton {color: red}') self.thread.start() self.thread.finished.connect(lambda cmd_log: self.on_finished(cmd_log, "")) def on_finished(self, log, type): if type == "ver": self.btub_ver.create_graph() self.pb_eye_ver_run.setStyleSheet('QPushButton {color: green}') self.btub_ver.add_lane_overlay(self.bitmap, self.label_eye_lanes_all, self.label_tab_eye_all) else: self.btub.create_graph() self.pb_eye_run.setStyleSheet('QPushButton {color: green}') self.btub.add_lane_overlay(self.bitmap, self.label_eye_lanes_all, self.label_tab_eye_all) for line in log: self.te_log.append(line) def on_progress(self, type, val): if type == "ver": self.progressBar_ver.setValue(val) else: self.progressBar.setValue(val) -
Partly, it's not exactly minimal and also does not allow to reproduce the issue.
