diff --git a/challenge.py b/challenge.py
index 93a85f8..8c73d3a 100644
--- a/challenge.py
+++ b/challenge.py
@@ -1,3 +1,5 @@
+from copy import deepcopy
+
 DATA = [
     {
         'name': 'Facundo',
@@ -71,14 +73,27 @@
     },
 ]
 
+def worker_homeless(worker):
+    worker['homeless'] = worker['organization']== ''
+    return worker
+
+
+
+def worker_old(worker):
+    worker['old'] = worker['age'] > 30
+    return worker
+
 
 def run():
+    
+
 
-    all_python_devs =  # Using filter, generate a list with all the python devs
-    all_Platzi_workers =  # Using filter, generate a list with all the Platzi workers
-    adults =  # Using filter, generate a list with all people over 18 years old
-    workers =  # Using map, generate a new list of people with a key 'homeless' with True or False values, if 'organization' have something or not
-    old_people =  # Using map, generate a new list of people with a key 'old' with True or False values, if 'age' is greater than 30 or not
+    all_python_devs = filter( lambda x : x['language'] == 'python', DATA) # Using filter, generate a list with all the python devs
+    all_Platzi_workers =  filter( lambda x : x['organization'] == 'Platzi', DATA) # Using filter, generate a list with all the Platzi workers
+    adults =  filter( lambda x: x['age']> 18, DATA)# Using filter, generate a list with all people over 18 years old
+    workers = list(map(lambda x: dict(x, **{'Homeless': x['organization'] == ''}), DATA))
+    old_people = list(map(lambda x: dict(x, **{'old':True}) if x['age'] > 30  else dict(x, **{'Old':False}), DATA))
+ # Using map, generate a new list of people with a key 'old' with True or False values, if 'age' is greater than 30 or not
 
     print('Python devs: ')
     for dev in all_python_devs:
@@ -104,5 +119,6 @@ def run():
     # Remember: when possible, use lambdas
 
 
+
 if __name__ == '__main__':
     run()