Improved code generation to add individual try/catch in generated_goodies.py. Fixes #4

Author: smarie

README.md

@@ -65,7 +65,9 @@ This project uses `setuptools_scm` to synchronise the version number. Therefore
 python setup.py egg_info bdist_wheel rotate -m.whl -k3
 ```
 
-You may need to install requirements for setup beforehand, using 
+You need to [generate code](##building-from-sources--notes-on-this-projects-design-principles) before packaging.
+
+You also may need to install requirements for setup beforehand, using 
 
 ```bash
 pip install -r ci_tools/requirements-setup.txt

code_generation/goodies_template.mako

@@ -2,22 +2,30 @@
 # This file is generated by mini_lambda_methods_generation.py - do not modify it !
 # ----
 from mini_lambda.main import C, make_lambda_friendly_class, make_lambda_friendly_method
+from warnings import warn
 
 % for o in import_lines:
 ${o}
 % endfor
 
 % for o in to_create:
+try:
+    ## IMPORT
+    ${o.import_line}
     % if o.constant_name:
-${o.item_name} = C(${o.constant_name}, '${o.constant_name}')
+    ## CONSTANT
+    ${o.item_name} = C(${o.constant_name}, '${o.constant_name}')
     % elif o.function_name:
         % if o.function_name != 'Format':
-${o.item_name} = make_lambda_friendly_method(${o.function_name}, '${o.function_name}')
+    ## FUNCTION
+    ${o.item_name} = make_lambda_friendly_method(${o.function_name}, '${o.function_name}')
         % endif
     % else:
-## CLASS
-${o.item_name} = make_lambda_friendly_class(${o.class_name})
+    ## CLASS
+    ${o.item_name} = make_lambda_friendly_class(${o.class_name})
     % endif
+except ImportError as e:
+    warn("Error performing '${o.import_line}': " + str(e))
 
 
 % endfor

code_generation/mini_lambda_methods_generation.py

@@ -97,7 +97,8 @@ def __str__(self):
 @autoclass
 class Goodie:
     def __init__(self, item_name: str, function_name: Optional[str] = None,
-                 constant_name: Optional[str] = None, class_name: Optional[str] = None):
+                 constant_name: Optional[str] = None, class_name: Optional[str] = None,
+                 import_line: Optional[str] = None):
         pass
 
     def __str__(self):
@@ -396,19 +397,23 @@ def define_goodies() -> Tuple[List[str], List[Goodie]]:
         import_string = "from " + package.__name__ + " import"
         for item_name, item in getmembers(package):
             if not item_name.startswith('_'):
-                import_string += ' ' + item_name + ','
+                # import_string += ' ' + item_name + ','
                 if isclass(item):
                     new_class_name = item_name[0].upper() + item_name
-                    goodies_list.append(Goodie(item_name=new_class_name, class_name=item_name))
+                    goodies_list.append(Goodie(item_name=new_class_name, class_name=item_name,
+                                               import_line=import_string + ' ' + item_name))
                 elif callable(item):
-                    goodies_list.append(Goodie(item_name=item_name.capitalize(), function_name=item_name))
+                    goodies_list.append(Goodie(item_name=item_name.capitalize(), function_name=item_name,
+                                               import_line=import_string + ' ' + item_name))
                 else:
                     new_item_name = item_name.capitalize()
                     if new_item_name == item_name:
                         new_item_name = new_item_name[0] + new_item_name
-                    goodies_list.append(Goodie(item_name=new_item_name, constant_name=item_name))
+                    goodies_list.append(Goodie(item_name=new_item_name, constant_name=item_name,
+                                               import_line=import_string + ' ' + item_name))
 
-        import_list.append(import_string[0:-1])
+        # we do not import anymore at the top but in each one so as to put additional try/catch around them
+        # import_list.append(import_string[0:-1])
 
     for function_name in built_in_functions:
         goodies_list.append(Goodie(item_name=function_name.capitalize(), function_name=function_name))