add read methods to text and json files

src/utilities/textfile.py

@@ -0,0 +1,57 @@
+__author__ = 'stubbfel'
+import os.path
+
+
+class TextFile:
+
+    def __init__(self, filename):
+        """
+        init the class and set the filename
+        :param filename:
+        """
+        assert isinstance(filename, str)
+        self._filename = filename
+
+    def write_text_file(self, file_content):
+        """
+        write strings to a text file
+        :param file_content: strings which has to been write i a text file
+        :raise ValueError: will be raised, when  the content is not a string
+        """
+        assert isinstance(self._filename, str)
+        with open(self._filename, 'w', newline='\n') as file:
+            file.write(file_content)
+            file.close()
+
+    def check_and_remove_file(self):
+        """
+        Method remove this file, if the file don't exists the method don't call remove
+        """
+        if self.exists_file:
+            os.remove(self._filename)
+
+    def read_text_file(self):
+        """
+        method return and read the content of a text file
+
+        :return: str - file content
+        """
+        with open(self._filename, newline='\n') as file:
+            return file.read()
+
+    @property
+    def exists_file(self):
+        """
+        check if this file exists or not
+        :return: true if the file exists, otherwise false
+        """
+        return os.path.isfile(self._filename)
+
+    @property
+    def get_filename(self):
+        """
+        get the file Name
+        :return: str
+        """
+        assert isinstance(self._filename, str)
+        return self._filename