PyQt5 crashes silently upon trying to clear a table

Leothechosen

Hi,

I have a QTableWidget (Item-based) called h2h_table that gets assigned 10 rows, 10 columns, and items containing 1 character long strings.

Upon creating a function to reset everything related to the program, I noticed that h2h_table.clear() will cause the program to crash silently. This does not occur with the other tables in the program. As far as I can tell, I'm not doing anything different to h2h_table that I'm not doing to the other tables.

Reset Everything Function:

def reset_everything():
    window.h2h = {}
    window.standings = {}
    window.matches = []
    window.selected_matches = []
    window.second_half_wins = {}
    window.scenarios = []
    window.team_list_widget.clear()
    window.match_list_widget.clear()

    window.add_match_team1_dropdown.clear()
    window.add_match_team1_dropdown.setCurrentIndex(-1)
    window.add_match_team2_dropdown.clear()
    window.add_match_team2_dropdown.setCurrentIndex(-1)
    window.edit_match_team1_dropdown.clear()
    window.edit_match_team1_dropdown.setCurrentIndex(-1)
    window.edit_match_team2_dropdown.clear()
    window.edit_match_team2_dropdown.setCurrentIndex(-1)

    for match_field in window.match_fields:
        match_field.clear()
        match_field.setCurrentIndex(-1)
        match_field.setEnabled(False)

    window.perc_playoffs_table.clear()
    window.num_scenarios_no_ties_table.clear()
    window.num_scenarios_ties_table.clear()
    window.percent_scenarios_no_tie_table.clear()
    window.percent_scenarios_ties_table.clear()
    window.num_scenarios_worst_table.clear()
    window.percent_scenarios_worst_table.clear()
    window.h2h_table.clear() # Clearing this table crashes the program silently

h2h_table construction:

def load_h2h():
    window.h2h_table.setColumnCount(len(window.h2h)) 
    window.h2h_table.setRowCount(len(window.h2h))
    for y, (team, team_h2h) in enumerate(window.h2h.items()):
        item = QtWidgets.QTableWidgetItem(team)
        window.h2h_table.setHorizontalHeaderItem(y, item)
        window.h2h_table.setVerticalHeaderItem(y, item)
        for x, (opp_team, wins) in enumerate(team_h2h.items()):
            item = QtWidgets.QTableWidgetItem(str(wins))
            window.h2h_table.setItem(y, x, item)

Any suggestions on how to diagnose and fix this? I also tried a few methods of getting an error to print, but nothing is working.

I'm on Windows 10.

SGaist

Hi and welcome to devnet,

Can you reproduce that crash with a minimal script only containing a QTableWidget ?

Leothechosen

@SGaist Well never mind, it appears I've fixed it by changing all "setHorizontalHeaderItem" to "setHorizontalHeaderLabels", and same with vertical headers.