Merge branch '26-BUG-myIOs-empty-error' into 'master'

Corrected the bug which was raising an error when AVAIL_FUNCTIONS was empty.

Closes #26

See merge request !15

myIOs/__init__.py

@@ -16,6 +16,7 @@ if debug:
 
 # LIST OF FILE NAMES IN myIOS/*.py (except *_*.py)
 functions = []
+
 for function in os.listdir(os.path.dirname(os.path.abspath(__file__))):
     if function[-3:] == '.py' and '_' not in os.path.basename(function):
         functions.append(function[:-3])

qOpenFileWidget.py

@@ -14,11 +14,23 @@ from . import sys
 AVAIL_FUNCTIONS = []
 PYVERSION = sys.version_info
 
+
+def No_function_available():
+    """In order to add functions in this list you need to add a file with the function's name in myIOs.
+For instance: In order to add 'readMySuperData(file)', create a file readMySuperData.py
+in which you code your function and move the file into mydesigngui/myIOs.
+
+For more details refer to the user guide."""
+    pass
+
 for key in myIOs.__dict__.keys():
     if key not in myIOs.__builtins__.keys() and not key.startswith('__'):
         if isinstance(myIOs.__dict__[key], FunctionType):
             AVAIL_FUNCTIONS.append(myIOs.__dict__[key])
 
+if len(AVAIL_FUNCTIONS) == 0:
+    AVAIL_FUNCTIONS.append(No_function_available)
+
 
 class QFunctionFormular(QWidget):
     
@@ -108,7 +120,7 @@ class QFunctionFormular(QWidget):
             self.layout.addRow('**kwargs', self.wUnexplicitKwArgs)
     
     def getArguments(self):
-
+        
         arguments = []
         
         for widget in self.wRequiredArgs:
@@ -158,7 +170,7 @@ class QOpenFileWidget(QWidget):
         
         for widget in self.functionWidgets:
             widget.hide()
-            
+        
         self.functionWidgets[0].show()
         self.currentFunctionWidget = self.functionWidgets[0]