diff --git a/paramecio2/libraries/datetime.py b/paramecio2/libraries/datetime.py
index dce07f4..db2683e 100644
--- a/paramecio2/libraries/datetime.py
+++ b/paramecio2/libraries/datetime.py
@@ -2,7 +2,10 @@ import time
 from datetime import date, datetime, tzinfo
 import arrow
 # from babel.dates import format_date, format_datetime, format_time, get_timezone, UTC
-from settings import config
+try:
+    from settings import config
+except:
+    config={}
 #from paramecio.citoplasma.sessions import get_session
 from os import environ
 
@@ -147,7 +150,7 @@ def now(utc=False, tz=''):
     
     Args:
         utc (bool): If True, the datetime is returned in UTC timezone
-        tz (str): Timezone name, example: Europe/Madrid. If set the datetime is returned in the timezone selected
+        tz (str, optional): Timezone name, example: Europe/Madrid. If set the datetime is returned in the timezone selected
     
     Returns:
         str: Return actual datetime
@@ -174,7 +177,7 @@ def today(utc=False,tz=''):
     
     Args:
         utc (bool): If True, the date is returned in UTC timezone
-        tz (str): Timezone name, example: Europe/Madrid. If set the date is returned in the timezone selected
+        tz (str, optional): Timezone name, example: Europe/Madrid. If set the date is returned in the timezone selected
     
     Returns:
         str: Return actual date with 00:00:00 how time
@@ -235,7 +238,7 @@ def timestamp_to_datetime_local(timestamp, tz=''):
     
     Args:
         timestamp (int): The timestamp for convert in datetime
-        tz (str): If you want convert to other timezone, set it.
+        tz (str, optional): If you want convert to other timezone, set it.
         
     Returns:
     
@@ -287,7 +290,7 @@ def local_to_gmt(timeform, sql_format_time=sql_format_time):
     
     Args:
         timeform (str): datetime in YYYYMMDDHHmmss format to convert to new format
-        sql_format_time (str): by default, the format is YYYYMMDDHHmmss, you can put other formatted str formats for date, here. 
+        sql_format_time (str, optional): by default, the format is YYYYMMDDHHmmss, you can put other formatted str formats for date, here. 
         
     Returns:
         If timeform is False, return False, if timeform is valid, return the datetime formatted 
@@ -306,7 +309,7 @@ def gmt_to_local(timeform, sql_format_time=sql_format_time):
     
     Args:
         timeform (str): datetime in YYYYMMDDHHmmss format to convert to new format
-        sql_format_time (str): by default, the format is YYYYMMDDHHmmss, you can put other formatted str formats for date, here. 
+        sql_format_time (str, optional): by default, the format is YYYYMMDDHHmmss, you can put other formatted str formats for date, here. 
         
     Returns:
         If timeform is False, return False, if timeform is valid, return the datetime formatted 
diff --git a/paramecio2/libraries/formsutils.py b/paramecio2/libraries/formsutils.py
index b59ab4b..3311792 100644
--- a/paramecio2/libraries/formsutils.py
+++ b/paramecio2/libraries/formsutils.py
@@ -7,8 +7,23 @@ from flask import session
 from paramecio2.libraries.keyutils import create_key_encrypt
 
 # Need unittest
+"""Functions and classes for process forms"""
 
 def pass_values_to_form(post, arr_form, yes_error=True, pass_values=True):
+    """Function for pass a dict with form values for check using forms dict
+    
+    Values dict and Forms dict need have the same key. A forms dict is maked of a serie of paramecio2 forms elements, used for check the value.
+    
+    Args:
+        post (dict): Dict composed by a series of values. The keys need to be equal to keys of arr_form dict.
+        arr_form (dict): Dict composed by a series or forms objects. The keys need to be equal to keys of post dict.
+        yes_error (bool): Show errors in txt_error form variables. 
+        pass_values (bool): Pass default values or values from post dict to arr_form dict items
+    
+    Returns:
+        dict: Return arr_form dict with checked values from post dict.
+    
+    """
     
     if pass_values:
         def get_value(key):
@@ -44,12 +59,26 @@ def pass_values_to_form(post, arr_form, yes_error=True, pass_values=True):
     return arr_form
     
 class CheckForm():
+    """Simple class for make similar check to pass_values_to_form. More simple.
+    """
     
     def __init__(self):
         
         self.error=0
 
     def check(self, post, arr_form):
+        """Simple method for pass a dict with form values for check using forms dict
+    
+        Values dict and Forms dict need have the same key. A forms dict is maked of a serie of paramecio2 forms elements, used for check the value.
+        
+        Args:
+            post (dict): Dict composed by a series of values. The keys need to be equal to keys of arr_form dict.
+            arr_form (dict): Dict composed by a series or forms objects. The keys need to be equal to keys of post dict.
+        
+        Returns:
+            dict: Return arr_form dict with checked values from post dict.
+        
+        """
         
         for k in arr_form.keys():