Use double quotes instead of simple quotes

Follow advice from:
https://stackoverflow.com/questions/56011/single-quotes-vs-double-quotes-in-python

25 files changed, 75 insertions, 75 deletions

diff --git a/src/arguments.py b/src/arguments.py
index 0065b78..bb60dce 100644
--- a/src/arguments.py
+++ b/src/arguments.py
@@ -2,12 +2,12 @@ import argparse
 
 def parser() -> argparse.ArgumentParser:
     parser = argparse.ArgumentParser(
-        usage = '%(prog)s [OPTION]',
-        description = 'Manage a context-base next-action list.'
+        usage = "%(prog)s [OPTION]",
+        description = "Manage a context-base next-action list."
     )
     parser.add_argument(
-        '-v', '--version', action = 'version',
+        "-v", "--version", action = "version",
         version = f"{parser.prog} version 1.0.0"
     )
-    parser.add_argument('-d', '--database')
+    parser.add_argument("-d", "--database")
     return parser
diff --git a/src/db/tags.py b/src/db/tags.py
index 76a276d..666bd1e 100644
--- a/src/db/tags.py
+++ b/src/db/tags.py
@@ -68,5 +68,5 @@ def update(cursor: Cursor, tag: Tag, form: ValidTagForm):
 def delete(cursor: Cursor, ids):
     if len(ids) >= 1:
         cursor.execute(
-            'DELETE FROM tags WHERE id IN (%s)' % ','.join('?'*len(ids)),
+            "DELETE FROM tags WHERE id IN (%s)" % ",".join("?"*len(ids)),
             ids)
diff --git a/src/db/task_tags.py b/src/db/task_tags.py
index 93dc627..e8c0ee0 100644
--- a/src/db/task_tags.py
+++ b/src/db/task_tags.py
@@ -35,5 +35,5 @@ def insert_many(cursor: Cursor, task_id: int, tag_ids: List[int]) -> List[TaskTa
 def delete(cursor: Cursor, task_ids: List[int]):
     if len(task_ids) >= 1:
         cursor.execute(
-            'DELETE FROM task_tags WHERE task_id IN (%s)' % ','.join('?'*len(task_ids)),
+            "DELETE FROM task_tags WHERE task_id IN (%s)" % ",".join("?"*len(task_ids)),
             task_ids)
diff --git a/src/db/tasks.py b/src/db/tasks.py
index b72965b..142abae 100644
--- a/src/db/tasks.py
+++ b/src/db/tasks.py
@@ -86,5 +86,5 @@ def update(cursor: Cursor, task: Task, form: ValidTaskForm):
 def delete(cursor: Cursor, ids):
     if len(ids) >= 1:
         cursor.execute(
-            'DELETE FROM tasks WHERE id IN (%s)' % ','.join('?'*len(ids)),
+            "DELETE FROM tasks WHERE id IN (%s)" % ",".join("?"*len(ids)),
             ids)
diff --git a/src/gui/signal.py b/src/gui/signal.py
index b604929..99100f1 100644
--- a/src/gui/signal.py
+++ b/src/gui/signal.py
@@ -1,7 +1,7 @@
 from PyQt5 import QtCore
 
 class Reload(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(name = 'reload')
+    _signal = QtCore.pyqtSignal(name = "reload")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
diff --git a/src/gui/tags/list.py b/src/gui/tags/list.py
index ad70dd0..f7eeba3 100644
--- a/src/gui/tags/list.py
+++ b/src/gui/tags/list.py
@@ -6,7 +6,7 @@ import db.tags
 import database
 
 class SelectionSignal(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(list, name = 'selection')
+    _signal = QtCore.pyqtSignal(list, name = "selection")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
@@ -24,7 +24,7 @@ def widget(parent, init_tags: List[int]) -> Tuple[QtWidgets.QWidget, SelectionSi
     layout = QtWidgets.QVBoxLayout(widget)
     widget.setLayout(layout)
 
-    layout.addWidget(QtWidgets.QLabel('Tags'))
+    layout.addWidget(QtWidgets.QLabel("Tags"))
 
     list_widget = QtWidgets.QListWidget()
     list_widget.setSelectionMode(QtWidgets.QAbstractItemView.MultiSelection)
diff --git a/src/gui/tags/panel/dialog.py b/src/gui/tags/panel/dialog.py
index 7a6d3bc..f0ca986 100644
--- a/src/gui/tags/panel/dialog.py
+++ b/src/gui/tags/panel/dialog.py
@@ -13,7 +13,7 @@ def add(parent_widget, add_tag_signal):
         database.commit()
         add_tag_signal.emit(tag)
 
-    return widget(parent_widget, 'Add a tag', 'add', None, on_add)
+    return widget(parent_widget, "Add a tag", "add", None, on_add)
 
 def update(parent_widget, update_tag_signal, row, tag):
 
@@ -22,13 +22,13 @@ def update(parent_widget, update_tag_signal, row, tag):
         update_tag_signal.emit(row, updated_tag)
         database.commit()
 
-    return widget(parent_widget, 'Modify a tag', 'modify', tag, on_update)
+    return widget(parent_widget, "Modify a tag", "modify", tag, on_update)
 
 def show_delete(table, rows):
     confirm = QtWidgets.QMessageBox.question(
         table,
-        'Tag deletion',
-        'Do you really want to delete the selected tags ?',
+        "Tag deletion",
+        "Do you really want to delete the selected tags ?",
         QtWidgets.QMessageBox.No | QtWidgets.QMessageBox.Yes,
         QtWidgets.QMessageBox.Yes)
 
diff --git a/src/gui/tags/panel/form/state.py b/src/gui/tags/panel/form/state.py
index 931e67a..fbec956 100644
--- a/src/gui/tags/panel/form/state.py
+++ b/src/gui/tags/panel/form/state.py
@@ -46,7 +46,7 @@ class TagFormEdition:
         return self._signal
 
 class ValidTagFormSignal(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(ValidTagForm, name = 'validTagForm')
+    _signal = QtCore.pyqtSignal(ValidTagForm, name = "validTagForm")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
diff --git a/src/gui/tags/panel/form/widget.py b/src/gui/tags/panel/form/widget.py
index 5627e3b..eb9cec8 100644
--- a/src/gui/tags/panel/form/widget.py
+++ b/src/gui/tags/panel/form/widget.py
@@ -23,11 +23,11 @@ def widget(
     grid_layout = QtWidgets.QGridLayout(grid)
     grid.setLayout(grid_layout)
 
-    init_name = tag.name if tag is not None else ''
-    name_input = line_edit(grid, grid_layout, 0, 'Name', init_name)
+    init_name = tag.name if tag is not None else ""
+    name_input = line_edit(grid, grid_layout, 0, "Name", init_name)
 
-    init_color = tag.color if tag is not None else '#FFFFFF'
-    color_input = color_edit(grid, grid_layout, 1, 'Color', QtGui.QColor(init_color))
+    init_color = tag.color if tag is not None else "#FFFFFF"
+    color_input = color_edit(grid, grid_layout, 1, "Color", QtGui.QColor(init_color))
 
     tag_form_edition = gui.tags.panel.form.state.TagFormEdition(
             init_name,
@@ -129,7 +129,7 @@ def buttons(parent, action_title, tag_form_signal, on_validate, on_cancel):
 
     tag_form_signal.connect(on_tag_form_signal)
 
-    cancel = QtWidgets.QPushButton('cancel', widget)
+    cancel = QtWidgets.QPushButton("cancel", widget)
     cancel.setIcon(gui.icon.dialog_cancel(cancel.style()))
     cancel.clicked.connect(on_cancel)
     layout.addWidget(cancel)
diff --git a/src/gui/tags/panel/signal.py b/src/gui/tags/panel/signal.py
index 9417530..022abde 100644
--- a/src/gui/tags/panel/signal.py
+++ b/src/gui/tags/panel/signal.py
@@ -3,7 +3,7 @@ from PyQt5 import QtCore
 from model.tag import Tag
 
 class AddTag(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(Tag, name = 'addTag')
+    _signal = QtCore.pyqtSignal(Tag, name = "addTag")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
@@ -15,7 +15,7 @@ class AddTag(QtCore.QObject):
         self._signal.connect(f)
 
 class UpdateTag(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(int, Tag, name = 'updateTag')
+    _signal = QtCore.pyqtSignal(int, Tag, name = "updateTag")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
diff --git a/src/gui/tags/panel/table/menu.py b/src/gui/tags/panel/table/menu.py
index 6bf812e..f9ee148 100644
--- a/src/gui/tags/panel/table/menu.py
+++ b/src/gui/tags/panel/table/menu.py
@@ -14,14 +14,14 @@ def open(table, update_tag_signal, position):
     actions = 0
 
     if len(rows) == 1:
-        modify_action = menu.addAction(gui.icon.dialog_open(menu.style()), 'modify')
+        modify_action = menu.addAction(gui.icon.dialog_open(menu.style()), "modify")
         actions += 1
     else:
         modify_action = QtWidgets.QAction(menu)
 
     tags = table.model().row_ids(rows)
     if not db.task_tags.one_is_used(database.cursor(), tags):
-        delete_action = menu.addAction(gui.icon.trash(menu.style()), 'delete')
+        delete_action = menu.addAction(gui.icon.trash(menu.style()), "delete")
         actions += 1
     else:
         delete_action = QtWidgets.QAction(menu)
diff --git a/src/gui/tags/panel/table/model.py b/src/gui/tags/panel/table/model.py
index 353f747..00ca785 100644
--- a/src/gui/tags/panel/table/model.py
+++ b/src/gui/tags/panel/table/model.py
@@ -11,7 +11,7 @@ import gui.color
 
 columns = 1
 
-headers = ['Name', 'Color']
+headers = ["Name", "Color"]
 
 default_sort = (0, Qt.AscendingOrder)
 
diff --git a/src/gui/tags/panel/widget.py b/src/gui/tags/panel/widget.py
index 3da55c9..fb51385 100644
--- a/src/gui/tags/panel/widget.py
+++ b/src/gui/tags/panel/widget.py
@@ -13,7 +13,7 @@ def widget(parent):
 
     add_tag_signal = gui.tags.panel.signal.AddTag()
 
-    add_tag_button = QtWidgets.QPushButton('Add a tag', widget)
+    add_tag_button = QtWidgets.QPushButton("Add a tag", widget)
     add_tag_button.setIcon(gui.icon.new_folder(widget.style()))
 
     add_tag_button.clicked.connect(lambda: gui.tags.panel.dialog.add(widget, add_tag_signal).exec_())
diff --git a/src/gui/tasks/dialog.py b/src/gui/tasks/dialog.py
index a28ecb0..1471910 100644
--- a/src/gui/tasks/dialog.py
+++ b/src/gui/tasks/dialog.py
@@ -15,7 +15,7 @@ def add(parent_widget, add_task_signal):
         task = service.tasks.create(database.cursor(), task_form)
         add_task_signal.emit(task, task_form.tags)
 
-    return widget(parent_widget, 'Add a task', 'add', None, [], on_add)
+    return widget(parent_widget, "Add a task", "add", None, [], on_add)
 
 def update(parent_widget, update_task_signal, row: int, task: Task, tags: List[int]):
 
@@ -23,13 +23,13 @@ def update(parent_widget, update_task_signal, row: int, task: Task, tags: List[i
         updated_task = service.tasks.update(database.cursor(), task, task_form)
         update_task_signal.emit(row, updated_task, task_form.tags)
 
-    return widget(parent_widget, 'Modify a task', 'modify', task, tags, on_update)
+    return widget(parent_widget, "Modify a task", "modify", task, tags, on_update)
 
 def show_delete(parent, rows: List[int], on_delete):
     confirm = QtWidgets.QMessageBox.question(
         parent,
-        'Task deletion',
-        'Do you really want to delete the selected tasks ?',
+        "Task deletion",
+        "Do you really want to delete the selected tasks ?",
         QtWidgets.QMessageBox.No | QtWidgets.QMessageBox.Yes,
         QtWidgets.QMessageBox.Yes)
 
diff --git a/src/gui/tasks/duration.py b/src/gui/tasks/duration.py
index 3ce8203..dc948e6 100644
--- a/src/gui/tasks/duration.py
+++ b/src/gui/tasks/duration.py
@@ -7,21 +7,21 @@ import gui.color
 
 def format(minutes: int):
     if minutes >= 60 * 24:
-        return '' + format_decimal(minutes / 60 / 24) + 'd'
+        return "" + format_decimal(minutes / 60 / 24) + "d"
     elif minutes >= 60:
-        return '' + format_decimal(minutes / 60) + 'h'
+        return "" + format_decimal(minutes / 60) + "h"
     elif minutes > 0:
-        return '' + str(minutes) + 'm'
+        return "" + str(minutes) + "m"
     else:
-        return ''
+        return ""
 
 def format_decimal(d: float) -> str:
-    return '{0:.2g}'.format(d)
+    return "{0:.2g}".format(d)
 
 def parse(duration: str) -> Optional[int]:
     duration = duration.strip()
     if duration:
-        result = re.match('^(\d+)(\.(\d+))?([mhd])$', duration.strip())
+        result = re.match("^(\d+)(\.(\d+))?([mhd])$", duration.strip())
         if result:
             n = int(result.group(1))
             if result.group(3):
@@ -30,11 +30,11 @@ def parse(duration: str) -> Optional[int]:
                 d = 0
             num = n + d
             unit = result.group(4)
-            if unit == 'm':
+            if unit == "m":
                 return math.floor(num)
-            elif unit == 'h':
+            elif unit == "h":
                 return math.floor(num * 60)
-            elif unit == 'd':
+            elif unit == "d":
                 return math.floor(num * 60 * 24)
         else:
             return None
diff --git a/src/gui/tasks/form/state.py b/src/gui/tasks/form/state.py
index 5b48cd9..09e658e 100644
--- a/src/gui/tasks/form/state.py
+++ b/src/gui/tasks/form/state.py
@@ -88,7 +88,7 @@ class TaskFormEdition:
         return self._signal
 
 class ValidTaskFormSignal(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(ValidTaskForm, name = 'validTaskForm')
+    _signal = QtCore.pyqtSignal(ValidTaskForm, name = "validTaskForm")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
diff --git a/src/gui/tasks/form/widget.py b/src/gui/tasks/form/widget.py
index 49339e1..9be2589 100644
--- a/src/gui/tasks/form/widget.py
+++ b/src/gui/tasks/form/widget.py
@@ -10,7 +10,7 @@ import gui.tasks.duration
 import gui.tags.list
 
 class TextEditSignal(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(str, name = 'textEdit')
+    _signal = QtCore.pyqtSignal(str, name = "textEdit")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
@@ -38,18 +38,18 @@ def widget(
     grid_layout = QtWidgets.QGridLayout(grid)
     grid.setLayout(grid_layout)
 
-    init_name = task.name if task is not None else ''
-    name_input = line_edit(grid, grid_layout, 0, 'Name', init_name)
+    init_name = task.name if task is not None else ""
+    name_input = line_edit(grid, grid_layout, 0, "Name", init_name)
 
-    init_duration = gui.tasks.duration.format(task.duration) if task is not None else ''
-    duration_input = line_edit(grid, grid_layout, 1, 'Duration', init_duration)
+    init_duration = gui.tasks.duration.format(task.duration) if task is not None else ""
+    duration_input = line_edit(grid, grid_layout, 1, "Duration", init_duration)
 
     init_difficulty = task.difficulty if task is not None else difficulty.Difficulty.NORMAL
     difficulty_input = combo_box(
             grid,
             grid_layout,
             3,
-            'Difficulty',
+            "Difficulty",
             [difficulty.format(d) for d in difficulty.values],
             int(init_difficulty))
 
@@ -58,15 +58,15 @@ def widget(
             grid,
             grid_layout,
             4,
-            'Priority',
+            "Priority",
             [priority.format(d) for d in priority.values],
             int(init_priority))
 
     (tags_list_widget, tags_signal) = tags_selection(widget, tags)
     layout.addWidget(tags_list_widget)
 
-    init_description = task.description if task is not None else ''
-    (description_input, description_signal) = text_edit(widget, 'Description', init_description)
+    init_description = task.description if task is not None else ""
+    (description_input, description_signal) = text_edit(widget, "Description", init_description)
     layout.addWidget(description_input)
 
     task_form_edition = gui.tasks.form.state.TaskFormEdition(
@@ -176,7 +176,7 @@ def buttons(parent, action_title, task_form_signal, on_validate, on_cancel):
 
     task_form_signal.connect(on_task_form_signal)
 
-    cancel = QtWidgets.QPushButton('cancel', widget)
+    cancel = QtWidgets.QPushButton("cancel", widget)
     cancel.setIcon(gui.icon.dialog_cancel(cancel.style()))
     cancel.clicked.connect(on_cancel)
     layout.addWidget(cancel)
diff --git a/src/gui/tasks/signal.py b/src/gui/tasks/signal.py
index e62a838..074e8ec 100644
--- a/src/gui/tasks/signal.py
+++ b/src/gui/tasks/signal.py
@@ -4,7 +4,7 @@ from typing import List
 from model.task import Task
 
 class AddTask(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(Task, list, name = 'addTask')
+    _signal = QtCore.pyqtSignal(Task, list, name = "addTask")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
@@ -16,7 +16,7 @@ class AddTask(QtCore.QObject):
         self._signal.connect(f)
 
 class UpdateTask(QtCore.QObject):
-    _signal = QtCore.pyqtSignal(int, Task, list, name = 'updateTask')
+    _signal = QtCore.pyqtSignal(int, Task, list, name = "updateTask")
 
     def __init__(self):
         QtCore.QObject.__init__(self)
diff --git a/src/gui/tasks/table/menu.py b/src/gui/tasks/table/menu.py
index 5404d6c..db89551 100644
--- a/src/gui/tasks/table/menu.py
+++ b/src/gui/tasks/table/menu.py
@@ -12,11 +12,11 @@ def open(table, update_task_signal, position):
     menu = QtWidgets.QMenu(table)
 
     if len(rows) == 1:
-        modify_action = menu.addAction(gui.icon.dialog_open(menu.style()), 'modify')
+        modify_action = menu.addAction(gui.icon.dialog_open(menu.style()), "modify")
     else:
         modify_action = QtWidgets.QAction(menu)
 
-    delete_action = menu.addAction(gui.icon.trash(menu.style()), 'delete')
+    delete_action = menu.addAction(gui.icon.trash(menu.style()), "delete")
 
     action = menu.exec_(table.mapToGlobal(position + QtCore.QPoint(15, 20)))
     if action == modify_action and len(rows) == 1:
diff --git a/src/gui/tasks/table/widget.py b/src/gui/tasks/table/widget.py
index 82c0456..fe8ea2e 100644
--- a/src/gui/tasks/table/widget.py
+++ b/src/gui/tasks/table/widget.py
@@ -88,7 +88,7 @@ class Widget(QtWidgets.QTableWidget):
             self._sort_is_ascending = True
         self._sort_column = column
         self.sort()
-        self._header_model.setItem(column, QtGui.QStandardItem('Hey!'))
+        # self._header_model.setItem(column, QtGui.QStandardItem("Hey!"))
         self.update_view()
 
     def sort(self):
@@ -214,13 +214,13 @@ def item(text: str):
 def age_since(timestamp):
     diff = int(time.time()) - timestamp
     if diff >= 60 * 60 * 24:
-        return '' + str(math.floor(diff / 60 / 60 / 24)) + 'd'
+        return "" + str(math.floor(diff / 60 / 60 / 24)) + "d"
     elif diff >= 60 * 60:
-        return '' + str(math.floor(diff / 60 / 60)) + 'h'
+        return "" + str(math.floor(diff / 60 / 60)) + "h"
     elif diff >= 60:
-        return '' + str(math.floor(diff / 60)) + 'm'
+        return "" + str(math.floor(diff / 60)) + "m"
     else:
-        return '1m'
+        return "1m"
 
 def colored_label(parent, text: str, color: QtGui.QColor):
     label = QtWidgets.QLabel(text)
diff --git a/src/gui/tasks/widget.py b/src/gui/tasks/widget.py
index 36fb743..3134124 100644
--- a/src/gui/tasks/widget.py
+++ b/src/gui/tasks/widget.py
@@ -13,7 +13,7 @@ def widget(parent, on_show: gui.signal.Reload):
 
     add_task_signal = gui.tasks.signal.AddTask()
 
-    add_task_button = QtWidgets.QPushButton('Add a task', widget)
+    add_task_button = QtWidgets.QPushButton("Add a task", widget)
     add_task_button.setIcon(gui.icon.new_folder(widget.style()))
     add_task_button.clicked.connect(lambda: gui.tasks.dialog.add(widget, add_task_signal).exec_())
     layout.addWidget(add_task_button)
diff --git a/src/gui/window.py b/src/gui/window.py
index 4865edf..f2a5910 100644
--- a/src/gui/window.py
+++ b/src/gui/window.py
@@ -19,7 +19,7 @@ def get():
             open_tasks.emit()
     tabs.currentChanged.connect(on_current_tab_changed)
 
-    tabs.addTab(gui.tasks.widget.widget(tabs, open_tasks), 'Tasks')
-    tabs.addTab(gui.tags.panel.widget.widget(tabs), 'Tags')
+    tabs.addTab(gui.tasks.widget.widget(tabs, open_tasks), "Tasks")
+    tabs.addTab(gui.tags.panel.widget.widget(tabs), "Tags")
 
     return window
diff --git a/src/main.py b/src/main.py
index 104063b..f89872a 100644
--- a/src/main.py
+++ b/src/main.py
@@ -9,7 +9,7 @@ import arguments
 import database
 
 args = arguments.parser().parse_args()
-database.init(args.database if args.database != None else 'database')
+database.init(args.database if args.database != None else "database")
 app = QtWidgets.QApplication(sys.argv)
 
 window = gui.window.get()
diff --git a/src/model/difficulty.py b/src/model/difficulty.py
index cbabd1e..e38f19b 100644
--- a/src/model/difficulty.py
+++ b/src/model/difficulty.py
@@ -13,18 +13,18 @@ values = [
 
 def format(difficulty: Difficulty) -> str:
     if difficulty == Difficulty.EASY:
-        return 'Easy'
+        return "Easy"
     elif difficulty == Difficulty.NORMAL:
-        return 'Normal'
+        return "Normal"
     elif difficulty == Difficulty.HARD:
-        return 'Hard'
+        return "Hard"
 
 def parse(string: str) -> Optional[Difficulty]:
-    if string == 'Easy':
+    if string == "Easy":
         return Difficulty.EASY
-    elif string == 'Normal':
+    elif string == "Normal":
         return Difficulty.MIDDLE
-    elif string == 'Hard':
+    elif string == "Hard":
         return Difficulty.HARD
     else:
         return None
diff --git a/src/model/priority.py b/src/model/priority.py
index 76cfd62..5948104 100644
--- a/src/model/priority.py
+++ b/src/model/priority.py
@@ -13,18 +13,18 @@ values = [
 
 def format(priority: Priority) -> str:
     if priority == Priority.LOW:
-        return 'Low'
+        return "Low"
     elif priority == Priority.MIDDLE:
-        return 'Middle'
+        return "Middle"
     elif priority == Priority.HIGH:
-        return 'High'
+        return "High"
 
 def parse(string: str) -> Optional[Priority]:
-    if string == 'Low':
+    if string == "Low":
         return Priority.LOW
-    elif string == 'Middle':
+    elif string == "Middle":
         return Priority.MIDDLE
-    elif string == 'High':
+    elif string == "High":
         return Priority.HIGH
     else:
         return None