diff --git a/labs03/task01.py b/labs03/task01.py
index 8045eb8..3865340 100644
--- a/labs03/task01.py
+++ b/labs03/task01.py
@@ -1,3 +1,8 @@
 #lab03 task01
 #Returns mutable type names
-[t for t, oldid, newid in  map( lambda (t, obj, objid): (t, id(obj*1), objid),  map(lambda x : (type(x), x, id(x)), [[], '', 3.141592]) ) if oldid == newid]
\ No newline at end of file
+[t for t, oldid, newid in  map( lambda (t, obj, objid): (t, id(obj*1), objid),  map(lambda x : (type(x), x, id(x)), [[], '', 3.141592]) ) if oldid == newid]
+
+for type_name, type_mutable in map( lambda t: (type(t), id(t)==id(t*1)), [[], '', 3.141592] ):
+    print("%s is %s" % (str(type_name), 'mutable' if type_mutable else 'immutable') )
+
+
diff --git a/labs03/task02.py b/labs03/task02.py
index efcf4dc..e43b6ba 100644
--- a/labs03/task02.py
+++ b/labs03/task02.py
@@ -1,10 +1,7 @@
 # lab03, task02
 
 def fibN(n):
-    prev, current = 0, 1
+    prev, current = 1, 1
     for n in range(n):
         yield prev
         prev, current = current, prev + current
-
-for x in fibN(10):
-    print(x)
\ No newline at end of file
diff --git a/labs03/task03.py b/labs03/task03.py
new file mode 100644
index 0000000..a24fe92
--- /dev/null
+++ b/labs03/task03.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+import requests, json
+
+# try:
+#     print('EUR:PLN %3.4f' % (requests.get('https://api.fixer.io/latest').json()['rates']['PLN']))
+# except:
+#     print("Something went wrong. Couldn't display EUR:PLN exchange rate.")
+#
+# Niestety nie znalazłem w pakiecie json dla pythona 2.7 operacji zwracającej wspomniany w treści zadania
+# 'obiekt typu JSON' -czytanie streamu zamienia dane na zwykłe pythonowe słowniki. Nie wnosi to więc wartości dodanej
+# do powyższego kodu, który w metodzie.json() zwraca obiekt typu dict, podobnie jak przyjmująca łańcuch znaków
+# funkcja json.loads.
+print(json.loads(requests.get('https://api.fixer.io/latest').text))['rates']['PLN']
+# assert type(json.loads(requests.get('https://api.fixer.io/latest').text)) == type(dict())
+#
diff --git a/labs03/task04.py b/labs03/task04.py
new file mode 100644
index 0000000..56aef98
--- /dev/null
+++ b/labs03/task04.py
@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+from weather import Weather
+import datetime
+
+weather = Weather()
+loc = weather.lookup_by_location('Poznan')
+print('Informacja o aktualnej pogodzie: %s' % loc.condition().text())
+
+def ftoc(f):
+    return (f-32.0)*5.0/9.0
+
+def date_to_pl_weekday(date_string):
+    """
+    input: string of form '10 Dec 2017'
+    output: weekday in polish language
+    """
+    idx = datetime.datetime.strptime(date_string, '%d %b %Y').weekday()
+    return [u'poniedziałek', u'wtorek', u'środa', u'czwartek', u'piątek', u'sobota', u'niedziela'][idx]
+
+min_day = min(loc.forecast(), key = lambda f: f.low())
+print(u'Najbliższy najzimniejszy dzień to %s. Będzie %s\u00B0C. ' % (date_to_pl_weekday(min_day.date()), ftoc(int(min_day.low()))))
+
diff --git a/labs03/task05.py b/labs03/task05.py
new file mode 100644
index 0000000..486c073
--- /dev/null
+++ b/labs03/task05.py
@@ -0,0 +1,18 @@
+import glob, os
+
+# print(glob.glob('./scores/model.iter[0-9][0-9][0-9][0-9][0-9][0-9][0-9].npz.bleu'))
+
+
+
+def extract_BLEU_score(fn):
+    '''
+    :param fn - path to file with :
+    :return:
+    '''
+    with open(fn, 'r') as fd:
+        line = fd.readline()
+        return (os.path.abspath(fn), float(line[6:line.index(',')]))
+
+print max([ t for t in map(extract_BLEU_score, glob.iglob('./scores/model.iter[0-9][0-9][0-9][0-9][0-9]*.npz.bleu'))], key = lambda tpl: tpl[1])[0]
+
+