diff --git a/mycroft/util/format.py b/mycroft/util/format.py
index 6c655ffda0..acac1eb5a0 100755
--- a/mycroft/util/format.py
+++ b/mycroft/util/format.py
@@ -14,7 +14,6 @@
 #
 
 from mycroft.util.lang.format_en import *
-from mycroft.util.lang.format_es import *
 from mycroft.util.lang.format_pt import *
 
 
diff --git a/mycroft/util/lang/parse_en.py b/mycroft/util/lang/parse_en.py
index fef772f9e7..deabc1dcc1 100644
--- a/mycroft/util/lang/parse_en.py
+++ b/mycroft/util/lang/parse_en.py
@@ -14,9 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from datetime import datetime, timedelta
+from datetime import datetime
 from dateutil.relativedelta import relativedelta
-from mycroft.util.lang.parse_common import *
+from mycroft.util.lang.parse_common import is_numeric, look_for_fractions
 
 
 def extractnumber_en(text):
@@ -31,7 +31,7 @@ def extractnumber_en(text):
     """
     aWords = text.split()
     aWords = [word for word in aWords if word not in ["the", "a", "an"]]
-    andPass = False
+    and_pass = False
     valPreAnd = False
     val = False
     count = 0
@@ -86,7 +86,7 @@ def extractnumber_en(text):
             #   and is_numeric(aPieces[1])):
             if look_for_fractions(aPieces):
                 val = float(aPieces[0]) / float(aPieces[1])
-            elif andPass:
+            elif and_pass:
                 # added to value, quit here
                 val = valPreAnd
                 break
@@ -96,17 +96,17 @@ def extractnumber_en(text):
 
         aWords[count] = ""
 
-        if (andPass):
+        if and_pass:
             aWords[count - 1] = ''  # remove "and"
             val += valPreAnd
         elif count + 1 < len(aWords) and aWords[count + 1] == 'and':
-            andPass = True
+            and_pass = True
             valPreAnd = val
             val = False
             count += 2
             continue
         elif count + 2 < len(aWords) and aWords[count + 2] == 'and':
-            andPass = True
+            and_pass = True
             valPreAnd = val
             val = False
             count += 3
@@ -118,7 +118,7 @@ def extractnumber_en(text):
     if not val:
         return False
 
-    # Return the $str with the number related words removed
+    # Return the string with the number related words removed
     # (now empty strings, so strlen == 0)
     aWords = [word for word in aWords if len(word) > 0]
     text = ' '.join(aWords)
@@ -126,21 +126,23 @@ def extractnumber_en(text):
     return val
 
 
-def extract_datetime_en(str, currentDate=None):
-    def clean_string(str):
-        # cleans the input string of unneeded punctuation and capitalization
-        # among other things
-        str = str.lower().replace('?', '').replace('.', '').replace(',', '') \
+def extract_datetime_en(string, currentDate=None):
+    def clean_string(s):
+        """
+            cleans the input string of unneeded punctuation and capitalization
+            among other things.
+        """
+        s = s.lower().replace('?', '').replace('.', '').replace(',', '') \
             .replace(' the ', ' ').replace(' a ', ' ').replace(' an ', ' ')
-        wordList = str.split()
+        wordList = s.split()
         for idx, word in enumerate(wordList):
             word = word.replace("'s", "")
 
             ordinals = ["rd", "st", "nd", "th"]
             if word[0].isdigit():
-                for ord in ordinals:
-                    if ord in word:
-                        word = word.replace(ord, "")
+                for ordinal in ordinals:
+                    if ordinal in word:
+                        word = word.replace(ordinal, "")
             wordList[idx] = word
 
         return wordList
@@ -155,7 +157,7 @@ def extract_datetime_en(str, currentDate=None):
                 minAbs != 0 or secOffset != 0
             )
 
-    if str == "":
+    if string == "":
         return None
     if currentDate is None:
         currentDate = datetime.now()
@@ -183,7 +185,7 @@ def extract_datetime_en(str, currentDate=None):
     monthsShort = ['jan', 'feb', 'mar', 'apr', 'may', 'june', 'july', 'aug',
                    'sept', 'oct', 'nov', 'dec']
 
-    words = clean_string(str)
+    words = clean_string(string)
 
     for idx, word in enumerate(words):
         if word == "":
@@ -355,7 +357,7 @@ def extract_datetime_en(str, currentDate=None):
             for i in range(0, used):
                 words[i + start] = ""
 
-            if (start - 1 >= 0 and words[start - 1] in markers):
+            if start - 1 >= 0 and words[start - 1] in markers:
                 words[start - 1] = ""
             found = True
             daySpecified = True
@@ -456,7 +458,7 @@ def extract_datetime_en(str, currentDate=None):
                         used += 1
                     elif wordNext == "in" and wordNextNext == "the" and \
                             words[idx + 3] == "morning":
-                        reaminder = "am"
+                        remainder = "am"
                         used += 3
                     elif wordNext == "in" and wordNextNext == "the" and \
                             words[idx + 3] == "afternoon":
@@ -531,7 +533,7 @@ def extract_datetime_en(str, currentDate=None):
                 else:
                     if wordNext == "pm" or wordNext == "p.m.":
                         strHH = strNum
-                        reaminder = "pm"
+                        remainder = "pm"
                         used = 1
                     elif wordNext == "am" or wordNext == "a.m.":
                         strHH = strNum
@@ -745,7 +747,7 @@ def isFractional_en(input_str):
     This function takes the given text and checks if it is a fraction.
 
     Args:
-        text (str): the string to check if fractional
+        input_str (str): the string to check if fractional
     Returns:
         (bool) or (float): False if not a fraction, otherwise the fraction
 
diff --git a/mycroft/util/lang/parse_es.py b/mycroft/util/lang/parse_es.py
index 221af2c8f5..2eaafac1a8 100644
--- a/mycroft/util/lang/parse_es.py
+++ b/mycroft/util/lang/parse_es.py
@@ -14,14 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from datetime import datetime, timedelta
-from dateutil.relativedelta import relativedelta
-from mycroft.util.lang.parse_common import *
 """
     Parse functions for spanish (es)
     TODO: numbers greater than 999999
 """
 
+
 # Undefined articles ["un", "una", "unos", "unas"] can not be supressed,
 # in Spanish, "un caballo" means "a horse" or "one horse".
 es_articles = ["el", "la", "los", "las"]
@@ -32,7 +30,7 @@ es_numbers_xlat = {
     "una": 1,
     "dos": 2,
     "tres": 3,
-    u"tr�s": 3,
+    u"trés": 3,
     "cuatro": 4,
     "cinco": 5,
     "seis": 6,
@@ -114,7 +112,7 @@ def es_parse(words, i):
             v1, i1 = r1
             r2 = es_cte(i1, "y")
             if r2:
-                v2, i2 = r2
+                i2 = r2[1]
                 r3 = es_number_word(i2, 1, 9)
                 if r3:
                     v3, i3 = r3
@@ -153,7 +151,7 @@ def es_parse(words, i):
             v1, i1 = r1
             r2 = es_cte(i1, "mil")
             if r2:
-                v2, i2 = r2
+                i2 = r2[1]
                 r3 = es_number_1_999(i2)
                 if r3:
                     v3, i3 = r3
diff --git a/mycroft/util/lang/parse_pt.py b/mycroft/util/lang/parse_pt.py
index 7ee731ae65..a7df7ca8c4 100644
--- a/mycroft/util/lang/parse_pt.py
+++ b/mycroft/util/lang/parse_pt.py
@@ -14,9 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from datetime import datetime, timedelta
-from dateutil.relativedelta import relativedelta
-from mycroft.util.lang.parse_common import *
 """
     Parse functions for Portuguese (PT-PT)
 
@@ -24,6 +21,11 @@ from mycroft.util.lang.parse_common import *
     TODO: date time pt
 """
 
+from datetime import datetime
+from dateutil.relativedelta import relativedelta
+from mycroft.util.lang.parse_common import is_numeric, look_for_fractions
+
+
 # Undefined articles ["um", "uma", "uns", "umas"] can not be supressed,
 # in PT, "um cavalo" means "a horse" or "one horse".
 pt_articles = ["o", "a", "os", "as"]
@@ -200,7 +202,7 @@ def extractnumber_pt(text):
                             zeros += 1
                         else:
                             break
-                for i in range(0, zeros):
+                for _ in range(0, zeros):
                     afterAndVal = afterAndVal / 10.0
                 result += afterAndVal
                 break
@@ -274,7 +276,7 @@ def pt_number_parse(words, i):
             v1, i1 = r1
             r2 = pt_cte(i1, "e")
             if r2:
-                v2, i2 = r2
+                i2 = r2[1]
                 r3 = pt_number_word(i2, 1, 9)
                 if r3:
                     v3, i3 = r3
@@ -313,7 +315,7 @@ def pt_number_parse(words, i):
             v1, i1 = r1
             r2 = pt_cte(i1, "mil")
             if r2:
-                v2, i2 = r2
+                i2 = r2[1]
                 r3 = pt_number_1_999(i2)
                 if r3:
                     v3, i3 = r3
@@ -366,7 +368,7 @@ def normalize_pt(text, remove_articles):
 
 
 def extract_datetime_pt(input_str, currentDate=None):
-    def clean_string(str):
+    def clean_string(s):
         # cleans the input string of unneeded punctuation and capitalization
         # among other things
         symbols = [".", ",", ";", "?", "!", u"º", u"ª"]
@@ -374,10 +376,10 @@ def extract_datetime_pt(input_str, currentDate=None):
                        "ao", "aos"]
 
         for word in symbols:
-            str = str.replace(word, "")
+            s = s.replace(word, "")
         for word in noise_words:
-            str = str.replace(" " + word + " ", " ")
-        str = str.lower().replace(
+            s = s.replace(" " + word + " ", " ")
+        s = s.lower().replace(
             u"á",
             "a").replace(
             u"ç",
@@ -408,15 +410,15 @@ def extract_datetime_pt(input_str, currentDate=None):
                     "em": ["do", "da", "dos", "das", "de"]}
         for syn in synonims:
             for word in synonims[syn]:
-                str = str.replace(" " + word + " ", " " + syn + " ")
+                s = s.replace(" " + word + " ", " " + syn + " ")
         # relevant plurals, cant just extract all s in pt
         wordlist = ["manhas", "noites", "tardes", "dias", "semanas", "anos",
                     "minutos", "segundos", "nas", "nos", "proximas",
                     "seguintes", "horas"]
-        for idx, word in enumerate(wordlist):
-            str = str.replace(word, word.rstrip('s'))
-        str = str.replace("meses", "mes").replace("anteriores", "anterior")
-        return str
+        for _, word in enumerate(wordlist):
+            s = s.replace(word, word.rstrip('s'))
+        s = s.replace("meses", "mes").replace("anteriores", "anterior")
+        return s
 
     def date_found():
         return found or \
@@ -472,7 +474,6 @@ def extract_datetime_pt(input_str, currentDate=None):
     for idx, word in enumerate(words):
         if word == "":
             continue
-        wordPrevPrevPrev = words[idx - 3] if idx > 2 else ""
         wordPrevPrev = words[idx - 2] if idx > 1 else ""
         wordPrev = words[idx - 1] if idx > 0 else ""
         wordNext = words[idx + 1] if idx + 1 < len(words) else ""
@@ -773,7 +774,7 @@ def extract_datetime_pt(input_str, currentDate=None):
             for i in range(0, used):
                 words[i + start] = ""
 
-            if (start - 1 >= 0 and words[start - 1] in lists):
+            if start - 1 >= 0 and words[start - 1] in lists:
                 words[start - 1] = ""
             found = True
             daySpecified = True