diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 88034e6..005dcb8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -18,12 +18,16 @@ repos:
     -   id: licenseheaders
         args: ["-t", ".copyright.tmpl", "-cy", "-f", "-d", "statapp"]
         pass_filenames: false
--   repo: https://github.com/pylint-dev/pylint.git
-    rev: v2.17.5
+-   repo: local
     hooks:
     -   id: pylint
+        name: pylint
+        entry: pylint
+        language: system
+        types: [python]
         args:
             [
               "-rn", # Only display messages
               "-sn", # Don't display the score
+              "--rcfile=.pylintrc",
             ]
diff --git a/statapp/__main__.py b/statapp/__main__.py
index 476045d..b106134 100644
--- a/statapp/__main__.py
+++ b/statapp/__main__.py
@@ -31,7 +31,7 @@ def main():
     translator = QtCore.QTranslator(app)
     locale = QtCore.QLocale.system().name()
     path = QtCore.QLibraryInfo.location(QtCore.QLibraryInfo.TranslationsPath)
-    translator.load('qt_%s' % locale, path)
+    translator.load(f'qt_{locale}', path)
     app.installTranslator(translator)
 
     window = MainWindow()
diff --git a/statapp/about_window.py b/statapp/about_window.py
index bb95aad..1b5d14c 100644
--- a/statapp/about_window.py
+++ b/statapp/about_window.py
@@ -19,12 +19,11 @@
 #
 import sys
 
-from PySide2.QtCore import QSize
-from PySide2.QtGui import QMovie, QIcon
+from PySide2.QtGui import QMovie
 from PySide2.QtWidgets import QMainWindow
 
 from statapp.ui.ui_about_window import Ui_AboutWindow
-from statapp.utils import resource_path
+from statapp.utils import resourcePath, addIcon
 
 if sys.version_info < (3, 8):
     import importlib_metadata
@@ -40,8 +39,8 @@ class AboutWindow(QMainWindow):
         self.ui = Ui_AboutWindow()
         self.ui.setupUi(self)
 
-        image_path = resource_path('ui/images/sticker.gif')
-        movie = QMovie(image_path)
+        gifPath = resourcePath('ui/images/sticker.gif')
+        movie = QMovie(gifPath)
         self.ui.labelgif.setMovie(movie)
         movie.start()
         self.movie = movie
@@ -50,6 +49,4 @@ class AboutWindow(QMainWindow):
         version = importlib_metadata.version(__package__ or __name__)
         self.ui.versionLabel.setText(f"Версия: {version}")
 
-        icon = QIcon()
-        icon.addFile(resource_path("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
-        self.setWindowIcon(icon)
+        addIcon(self)
diff --git a/statapp/calculations.py b/statapp/calculations.py
index 1ac339e..871fafb 100644
--- a/statapp/calculations.py
+++ b/statapp/calculations.py
@@ -24,16 +24,16 @@ DIRECT_LINK = 0
 INDIRECT_LINK = 1
 
 
-def generate_x_values(mean, std, typeConnection, y):
-    yMean = np.mean(y)
+def generateXValues(mean, std, typeConnection, yColumn):
+    yMean = np.mean(yColumn)
     values = []
-    for cur_y in y:
+    for y in yColumn:
         raz = np.abs(mean - np.random.normal(mean, std))
         if typeConnection == INDIRECT_LINK:
             raz *= -1
-        if cur_y > yMean:
+        if y > yMean:
             x = mean + raz
-        elif cur_y < yMean:
+        elif y < yMean:
             x = mean - raz
         else:
             x = mean
@@ -41,11 +41,11 @@ def generate_x_values(mean, std, typeConnection, y):
     return np.array(values)
 
 
-def variance_analysis(data):
+def varianceAnalysis(data):
     return np.array([
         [np.mean(col), np.std(col), np.min(col), np.max(col)] for col in data.T
     ])
 
 
-def correlation_analysis(data):
+def correlationAnalysis(data):
     return pd.DataFrame(data).corr().to_numpy()
diff --git a/statapp/correlation_analysis.py b/statapp/correlation_analysis.py
index 45ad7f0..8e80920 100644
--- a/statapp/correlation_analysis.py
+++ b/statapp/correlation_analysis.py
@@ -21,24 +21,24 @@ from PySide2.QtCore import QSize
 from PySide2.QtGui import QIcon
 from PySide2.QtWidgets import QDialog, QHeaderView
 
-from statapp.calculations import correlation_analysis
+from statapp.calculations import correlationAnalysis
 from statapp.models.correlation_analysis_model import CorrelationAnalysisModel
 from statapp.ui.ui_correlation_analysis_window import Ui_CorrelationAnalysisWindow
-from statapp.utils import resource_path
+from statapp.utils import resourcePath
 
 
-class СorrelationAnalysisWindow(QDialog):
+class CorrelationAnalysisWindow(QDialog):
     def __init__(self, data):
         super().__init__()
         self.ui = Ui_CorrelationAnalysisWindow()
         self.ui.setupUi(self)
 
-        res = correlation_analysis(data)
+        res = correlationAnalysis(data)
         self.model = CorrelationAnalysisModel(res.round(2))
         self.ui.tableView.setModel(self.model)
         header = self.ui.tableView.horizontalHeader()
         header.setSectionResizeMode(QHeaderView.ResizeMode.Stretch)
 
         icon = QIcon()
-        icon.addFile(resource_path("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
+        icon.addFile(resourcePath("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
         self.setWindowIcon(icon)
diff --git a/statapp/generate_factor_window.py b/statapp/generate_factor_window.py
index bab3d8f..dbb488f 100644
--- a/statapp/generate_factor_window.py
+++ b/statapp/generate_factor_window.py
@@ -17,13 +17,12 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from PySide2.QtCore import Slot, QSize
-from PySide2.QtGui import QIcon
+from PySide2.QtCore import Slot
 from PySide2.QtWidgets import QDialog
 
 from statapp.ui.ui_generate_factor_window import Ui_GenerateFactorWindow
 from statapp.models.combobox_model import ComboBoxModel
-from statapp.utils import resource_path
+from statapp.utils import addIcon
 
 DIRECT_LINK = 0
 INDIRECT_LINK = 1
@@ -44,9 +43,7 @@ class GenerateFactorWindow(QDialog):
         self.ui.setupUi(self)
         self.ui.typeComboBox.setModel(self._typeComboBox)
 
-        icon = QIcon()
-        icon.addFile(resource_path("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
-        self.setWindowIcon(icon)
+        addIcon(self)
 
     @Slot()
     def on_generatePushButton_clicked(self):
diff --git a/statapp/generate_window.py b/statapp/generate_window.py
index 0449bd6..b3c8cfd 100644
--- a/statapp/generate_window.py
+++ b/statapp/generate_window.py
@@ -17,12 +17,11 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from PySide2.QtCore import Slot, QSize
-from PySide2.QtGui import QIcon
+from PySide2.QtCore import Slot
 from PySide2.QtWidgets import QDialog
 
 from statapp.ui.ui_generate_window import Ui_GenerateWindow
-from statapp.utils import resource_path
+from statapp.utils import addIcon
 
 
 class GenerateWindow(QDialog):
@@ -34,9 +33,7 @@ class GenerateWindow(QDialog):
         self.ui = Ui_GenerateWindow()
         self.ui.setupUi(self)
 
-        icon = QIcon()
-        icon.addFile(resource_path("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
-        self.setWindowIcon(icon)
+        addIcon(self)
 
 
     @Slot()
diff --git a/statapp/main_window.py b/statapp/main_window.py
index fddc529..eb6172d 100644
--- a/statapp/main_window.py
+++ b/statapp/main_window.py
@@ -18,20 +18,19 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 import numpy as np
-from PySide2.QtCore import Slot, QSize
-from PySide2.QtGui import QIcon
-from PySide2.QtWidgets import QMainWindow, QMessageBox, QAction
+from PySide2.QtCore import Slot
+from PySide2.QtWidgets import QMainWindow, QMessageBox
 
-from statapp.calculations import generate_x_values
+from statapp.calculations import generateXValues
 from statapp.generate_factor_window import GenerateFactorWindow
 from statapp.models.input_values_model import InputValuesModel
 from statapp.generate_window import GenerateWindow
 from statapp.about_window import AboutWindow
 from statapp.models.fileslc_model import FileSLCModel
 from statapp.ui.ui_main_window import Ui_MainWindow
-from statapp.utils import resource_path, buildMessageBox
+from statapp.utils import buildMessageBox, addIcon
 from statapp.variance_analysis import VarianceAnalysisWindow
-from statapp.correlation_analysis import СorrelationAnalysisWindow
+from statapp.correlation_analysis import CorrelationAnalysisWindow
 
 
 class MainWindow(QMainWindow):
@@ -41,14 +40,14 @@ class MainWindow(QMainWindow):
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
 
-        icon = QIcon()
-        icon.addFile(resource_path("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
-        self.setWindowIcon(icon)
+        addIcon(self)
 
         self.ui.generateXaction.setEnabled(False)
         self.ui.varianceAnalysisAction.setEnabled(False)
         self.ui.correlationAnalisisAction.setEnabled(False)
 
+        self.aboutWindow = None
+
         self.isDataChanged = False
         self.model = InputValuesModel()
         self.fileModel = FileSLCModel()
@@ -56,12 +55,12 @@ class MainWindow(QMainWindow):
 
     @Slot()
     def on_openfileaction_triggered(self):
-        current_data = self.model.getData()
+        currentData = self.model.getData()
         data = np.array([])
-        if current_data.size > 1:
+        if currentData.size > 1:
             file = ''
-            if self.fileModel.file_name:
-                file = '\nФайл сохранения: ' + self.fileModel.file_name
+            if self.fileModel.fileName:
+                file = '\nФайл сохранения: ' + self.fileModel.fileName
 
             msgBox = buildMessageBox \
                 ('Сохранение данных',
@@ -125,10 +124,9 @@ class MainWindow(QMainWindow):
         if gfw.exec():
             data = self.model.getData()
             y = self.model.getY()
-            x_arr = generate_x_values(gfw.mat, gfw.deviation, gfw.typeConnection, y)
-            x_arr = x_arr.reshape(len(x_arr), 1).round(2)
-            # dd = dd.reshape(len(dd), 1)
-            data = np.concatenate((data, x_arr), axis=1)
+            xValues = generateXValues(gfw.mat, gfw.deviation, gfw.typeConnection, y)
+            xValues = xValues.reshape(len(xValues), 1).round(2)
+            data = np.concatenate((data, xValues), axis=1)
             self.model.updateAllData(data)
             self.ui.varianceAnalysisAction.setEnabled(True)
             self.ui.correlationAnalisisAction.setEnabled(True)
@@ -136,9 +134,8 @@ class MainWindow(QMainWindow):
 
     @Slot()
     def on_aboutmenuaction_triggered(self):
-        global about_window
-        about_window = AboutWindow()
-        about_window.show()
+        self.aboutWindow = AboutWindow()
+        self.aboutWindow.show()
 
     @Slot()
     def on_varianceAnalysisAction_triggered(self):
@@ -147,14 +144,14 @@ class MainWindow(QMainWindow):
 
     @Slot()
     def on_correlationAnalisisAction_triggered(self):
-        dw = СorrelationAnalysisWindow(self.model.getData())
+        dw = CorrelationAnalysisWindow(self.model.getData())
         dw.exec()
 
     def closeEvent(self, event):
         if self.isDataChanged:
             file = ''
-            if self.fileModel.file_name:
-                file = '\nФайл сохранения: ' + self.fileModel.file_name
+            if self.fileModel.fileName:
+                file = '\nФайл сохранения: ' + self.fileModel.fileName
 
             msgBox = buildMessageBox \
                 ('Завершение работы',
diff --git a/statapp/models/correlation_analysis_model.py b/statapp/models/correlation_analysis_model.py
index 9b287ff..582789d 100644
--- a/statapp/models/correlation_analysis_model.py
+++ b/statapp/models/correlation_analysis_model.py
@@ -20,7 +20,7 @@
 from PySide2.QtCore import QModelIndex, Qt
 
 from statapp.models.ro_table_model import ROTableModel
-from statapp.models.utils import yx_header
+from statapp.models.utils import yxHeader
 
 
 class CorrelationAnalysisModel(ROTableModel):
@@ -28,15 +28,12 @@ class CorrelationAnalysisModel(ROTableModel):
         super().__init__(data)
 
     def getHorizontalHeader(self):
-        return yx_header(self.columnCount(QModelIndex()))
+        return yxHeader(self.columnCount(QModelIndex()))
 
     def getVerticalHeader(self):
-        return yx_header(self.rowCount(QModelIndex()))
+        return yxHeader(self.rowCount(QModelIndex()))
 
     def data(self, index, role):
-        if role == Qt.DisplayRole:
-            if (index.column() <= index.row()):
-                return float(self._data[index.row(), index.column()])
-            else:
-                None
+        if role == Qt.DisplayRole and index.column() <= index.row():
+            return super().data(index, role)
         return None
diff --git a/statapp/models/editable_table_model.py b/statapp/models/editable_table_model.py
index 115fbbc..335f3d3 100644
--- a/statapp/models/editable_table_model.py
+++ b/statapp/models/editable_table_model.py
@@ -43,7 +43,7 @@ class EditableTableModel(ROTableModel):
         return False
 
     def data(self, index, role):
-        if role == Qt.DisplayRole or role == Qt.EditRole:
-            return float(self._data[index.row(), index.column()])
+        if role in (Qt.DisplayRole, Qt.EditRole):
+            return super().data(index, Qt.DisplayRole)
 
         return None
diff --git a/statapp/models/fileslc_model.py b/statapp/models/fileslc_model.py
index 33a3c18..23c7679 100644
--- a/statapp/models/fileslc_model.py
+++ b/statapp/models/fileslc_model.py
@@ -24,30 +24,35 @@ from PySide2.QtWidgets import QFileDialog, QMessageBox
 class FileSLCModel:
     def __init__(self):
         super().__init__()
-        self.file_name = None
+        self.fileName = None
 
     def saveFile(self, data):
-        if not self.file_name:
-            self.file_name, _ = QFileDialog.getSaveFileName(None, "Сохранить файл", "", "Text Files (*.txt);;CSV Files (*.csv)")
-        if self.file_name:
-            np.savetxt(self.file_name, data, delimiter=",")
+        if not self.fileName:
+            self.fileName, _ = QFileDialog.getSaveFileName(
+                None, "Сохранить файл", "", "Text Files (*.txt);;CSV Files (*.csv)"
+            )
+        if self.fileName:
+            np.savetxt(self.fileName, data, delimiter=",")
             return True
         return False
 
     def loadFile(self):
-        self.file_name, _ = QFileDialog.getOpenFileName(None, "Загрузить файл", "", "Files (*.txt *.csv)")
-        if self.file_name:
+        self.fileName, _ = QFileDialog.getOpenFileName(
+            None, "Загрузить файл", "", "Files (*.txt *.csv)"
+        )
+        if self.fileName:
             try:
-                content = np.genfromtxt(self.file_name, delimiter=',', invalid_raise=True, ndmin=2)
-            except ValueError as e:
+                content = np.genfromtxt(self.fileName, delimiter=',', invalid_raise=True, ndmin=2)
+            except ValueError:
                 QMessageBox.warning \
                     (None,
                     'Ошибка',
                     "Ошибка чтения файла!\nФайл нельзя открыть или файл неверного формата")
-                self.file_name = None
+                self.fileName = None
                 return None
             return content
 
+        return None
+
     def closeFile(self):
-        self.file_name = None
-        pass
+        self.fileName = None
diff --git a/statapp/models/input_values_model.py b/statapp/models/input_values_model.py
index c257852..0b0de4c 100644
--- a/statapp/models/input_values_model.py
+++ b/statapp/models/input_values_model.py
@@ -18,10 +18,10 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 import numpy as np
-from PySide2.QtCore import Qt, QModelIndex
+from PySide2.QtCore import QModelIndex
 
 from statapp.models.editable_table_model import EditableTableModel
-from statapp.models.utils import yx_header
+from statapp.models.utils import yxHeader
 
 
 class InputValuesModel(EditableTableModel):
@@ -29,7 +29,7 @@ class InputValuesModel(EditableTableModel):
         super().__init__(data)
 
     def getHorizontalHeader(self):
-        return yx_header(self.columnCount(QModelIndex()))
+        return yxHeader(self.columnCount(QModelIndex()))
 
     def getY(self):
         return self._data[:, 0]
diff --git a/statapp/models/ro_table_model.py b/statapp/models/ro_table_model.py
index 6386295..6e138b5 100644
--- a/statapp/models/ro_table_model.py
+++ b/statapp/models/ro_table_model.py
@@ -17,12 +17,11 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-import PySide2
 import numpy as np
 from PySide2 import QtCore
 from PySide2.QtCore import Qt
 
-from statapp.utils import safe_list_get
+from statapp.utils import safeListGet
 
 
 class ROTableModel(QtCore.QAbstractTableModel):
@@ -55,7 +54,7 @@ class ROTableModel(QtCore.QAbstractTableModel):
 
     def headerData(self, section: int, orientation: Qt.Orientation, role: int = ...):
         if role == Qt.DisplayRole:
-            return safe_list_get(self._headers[orientation](), section, None)
+            return safeListGet(self._headers[orientation](), section, None)
 
         return None
 
diff --git a/statapp/models/utils.py b/statapp/models/utils.py
index beb310b..7d8f9ec 100644
--- a/statapp/models/utils.py
+++ b/statapp/models/utils.py
@@ -17,5 +17,5 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-def yx_header(count):
+def yxHeader(count):
     return ['Y'] + [f'X{i}' for i in range(1, count)]
diff --git a/statapp/models/variance_analysis_model.py b/statapp/models/variance_analysis_model.py
index baed769..08ba1df 100644
--- a/statapp/models/variance_analysis_model.py
+++ b/statapp/models/variance_analysis_model.py
@@ -20,7 +20,7 @@
 from PySide2.QtCore import QModelIndex
 
 from statapp.models.ro_table_model import ROTableModel
-from statapp.models.utils import yx_header
+from statapp.models.utils import yxHeader
 
 
 class VarianceAnalysisModel(ROTableModel):
@@ -31,4 +31,4 @@ class VarianceAnalysisModel(ROTableModel):
         return ['Мат. ожидание', 'Среднекв. отклонение', 'Минимум', 'Максимум']
 
     def getVerticalHeader(self):
-        return yx_header(self.rowCount(QModelIndex()))
+        return yxHeader(self.rowCount(QModelIndex()))
diff --git a/statapp/utils.py b/statapp/utils.py
index 7a90aa5..c4f019f 100644
--- a/statapp/utils.py
+++ b/statapp/utils.py
@@ -20,21 +20,28 @@
 import os
 import sys
 
+from PySide2.QtCore import QSize
+from PySide2.QtGui import QIcon
 from PySide2.QtWidgets import QMessageBox
 
 
-def resource_path(relative):
+def resourcePath(relative):
     if getattr(sys, 'frozen', False):
-        bundle_dir = sys._MEIPASS
+        # pylint: disable=protected-access
+        bundleDir = sys._MEIPASS
     else:
         # we are running in a normal Python environment
-        bundle_dir = os.path.dirname(os.path.abspath(__file__))
-    return os.path.join(bundle_dir, relative)
+        bundleDir = os.path.dirname(os.path.abspath(__file__))
+    return os.path.join(bundleDir, relative)
 
+def addIcon(windowOrDialog):
+    icon = QIcon()
+    icon.addFile(resourcePath("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
+    windowOrDialog.setWindowIcon(icon)
 
-def safe_list_get(l, idx, default):
+def safeListGet(lst, idx, default):
     try:
-        return l[idx]
+        return lst[idx]
     except IndexError:
         return default
 
diff --git a/statapp/variance_analysis.py b/statapp/variance_analysis.py
index 0cbab8b..0209049 100644
--- a/statapp/variance_analysis.py
+++ b/statapp/variance_analysis.py
@@ -17,14 +17,12 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from PySide2.QtCore import QSize
-from PySide2.QtGui import QIcon
 from PySide2.QtWidgets import QDialog, QHeaderView
 
-from statapp.calculations import variance_analysis
+from statapp.calculations import varianceAnalysis
 from statapp.models.variance_analysis_model import VarianceAnalysisModel
 from statapp.ui.ui_variance_analysis_window import Ui_VarianceAnalysisWindow
-from statapp.utils import resource_path
+from statapp.utils import addIcon
 
 
 class VarianceAnalysisWindow(QDialog):
@@ -33,12 +31,10 @@ class VarianceAnalysisWindow(QDialog):
         self.ui = Ui_VarianceAnalysisWindow()
         self.ui.setupUi(self)
 
-        res = variance_analysis(data)
+        res = varianceAnalysis(data)
         self.model = VarianceAnalysisModel(res.round(2))
         self.ui.tableView.setModel(self.model)
         header = self.ui.tableView.horizontalHeader()
         header.setSectionResizeMode(QHeaderView.ResizeMode.Stretch)
 
-        icon = QIcon()
-        icon.addFile(resource_path("ui/images/logo.ico"), QSize(), QIcon.Normal, QIcon.Off)
-        self.setWindowIcon(icon)
+        addIcon(self)