diff --git a/src/cchardet/__init__.py b/src/cchardet/__init__.py
index 4f561f2..de2a3db 100644
--- a/src/cchardet/__init__.py
+++ b/src/cchardet/__init__.py
@@ -13,5 +13,7 @@ def detect(msg):
             "confidence": float
         }
     """
-    # TODO: Unicode t = u"あいうえお" があった時の対処 "isinstance(t,unicode) == True"
-    return _cchardet.detect_with_confidence(msg)
+    encoding, confidence = _cchardet.detect_with_confidence(msg)
+    if isinstance(encoding, bytes):
+        encoding = encoding.decode()
+    return {"encoding": encoding, "confidence": confidence}
diff --git a/src/cchardet/_cchardet.pyx b/src/cchardet/_cchardet.pyx
index cac4151..46285ea 100644
--- a/src/cchardet/_cchardet.pyx
+++ b/src/cchardet/_cchardet.pyx
@@ -41,17 +41,9 @@ def detect_with_confidence(char *msg):
     # ref: charsetdetect.cpp
     if result == 1: # Need more data
         detected_charset = csd_close2(csd, &confidence)
-        ret = {
-            "encoding":detected_charset,
-            "confidence":confidence
-        }
     elif result == 0: # Detected early
         detected_charset = csd_close2(csd, &confidence)
-        ret = {
-            "encoding":detected_charset,
-            "confidence":confidence
-        }
     else: # Error, signal with a negative number
         raise Exception("Error, signal with a negative number")
-    return ret
+    return detected_charset,confidence
 
diff --git a/test/tests.py b/test/tests.py
index d2b3a33..82c916d 100644
--- a/test/tests.py
+++ b/test/tests.py
@@ -47,16 +47,15 @@ class TestCchardet():
     def test_detect_bg_iso88595(self):
         encoding = "ISO-8859-5"
         path = r"testdata/bg/ISO-8859-5/wikitop_bg_ISO-8859-5.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
-        print(detected_encoding)
         eq_(encoding.lower(),detected_encoding['encoding'].lower())
 
     def test_detect_bg_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/bg/UTF-8/wikitop_bg_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -65,7 +64,7 @@ class TestCchardet():
     def test_detect_bg_windows1251(self):
         encoding = "WINDOWS-1251"
         path = r"testdata/bg/WINDOWS-1251/wikitop_bg_WINDOWS-1251.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -74,7 +73,7 @@ class TestCchardet():
     def test_detect_cz_iso88592(self):
         encoding = "ISO-8859-2"
         path = r"testdata/cz/ISO-8859-2/wikitop_cz_ISO-8859-2.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -83,7 +82,7 @@ class TestCchardet():
     def test_detect_cz_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/cz/UTF-8/wikitop_cz_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -92,7 +91,7 @@ class TestCchardet():
     def test_detect_de_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/de/UTF-8/wikitop_de_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -101,7 +100,7 @@ class TestCchardet():
     def test_detect_de_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/de/WINDOWS-1252/wikitop_de_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -110,7 +109,7 @@ class TestCchardet():
     def test_detect_dk_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/dk/UTF-8/wikitop_dk_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -119,7 +118,7 @@ class TestCchardet():
     def test_detect_dk_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/dk/WINDOWS-1252/wikitop_dk_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -128,7 +127,7 @@ class TestCchardet():
     def test_detect_el_iso88597(self):
         encoding = "ISO-8859-7"
         path = r"testdata/el/ISO-8859-7/wikitop_el_ISO-8859-7.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -137,7 +136,7 @@ class TestCchardet():
     def test_detect_el_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/el/UTF-8/wikitop_el_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -146,7 +145,7 @@ class TestCchardet():
     def test_detect_en_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/en/UTF-8/wikitop_en_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -155,7 +154,7 @@ class TestCchardet():
     def test_detect_en_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/en/WINDOWS-1252/wikitop_en_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -164,7 +163,7 @@ class TestCchardet():
     def test_detect_es_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/es/UTF-8/wikitop_es_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -173,7 +172,7 @@ class TestCchardet():
     def test_detect_es_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/es/WINDOWS-1252/wikitop_es_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -182,7 +181,7 @@ class TestCchardet():
     def test_detect_fi_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/fi/UTF-8/wikitop_fi_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -191,7 +190,7 @@ class TestCchardet():
     def test_detect_fi_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/fi/WINDOWS-1252/wikitop_fi_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -200,7 +199,7 @@ class TestCchardet():
     def test_detect_fr_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/fr/UTF-8/wikitop_fr_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -209,7 +208,7 @@ class TestCchardet():
     def test_detect_fr_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/fr/WINDOWS-1252/wikitop_fr_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -218,7 +217,7 @@ class TestCchardet():
     def test_detect_he_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/he/UTF-8/wikitop_he_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -227,7 +226,7 @@ class TestCchardet():
     def test_detect_he_windows1255(self):
         encoding = "WINDOWS-1255"
         path = r"testdata/he/WINDOWS-1255/wikitop_he_WINDOWS-1255.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -236,7 +235,7 @@ class TestCchardet():
     def test_detect_hu_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/hu/UTF-8/wikitop_hu_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -245,7 +244,7 @@ class TestCchardet():
     def test_detect_hu_iso55892(self):
         encoding = "ISO-8859-2"
         path = r"testdata/hu/ISO-8859-2/wikitop_hu_ISO-8859-2.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -254,7 +253,7 @@ class TestCchardet():
     def test_detect_it_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/it/UTF-8/wikitop_it_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -263,7 +262,7 @@ class TestCchardet():
     def test_detect_it_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/it/WINDOWS-1252/wikitop_it_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -272,7 +271,7 @@ class TestCchardet():
     def test_detect_nl_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/nl/UTF-8/wikitop_nl_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -281,7 +280,7 @@ class TestCchardet():
     def test_detect_nl_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/nl/WINDOWS-1252/wikitop_nl_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -290,7 +289,7 @@ class TestCchardet():
     def test_detect_no_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/no/UTF-8/wikitop_no_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -299,7 +298,7 @@ class TestCchardet():
     def test_detect_no_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/no/WINDOWS-1252/wikitop_no_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -308,7 +307,7 @@ class TestCchardet():
     def test_detect_pl_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/pl/UTF-8/wikitop_pl_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -317,7 +316,7 @@ class TestCchardet():
     def test_detect_pl_iso88592(self):
         encoding = "ISO-8859-2"
         path = r"testdata/pl/ISO-8859-2/wikitop_pl_ISO-8859-2.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -326,7 +325,7 @@ class TestCchardet():
     def test_detect_pt_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/pt/UTF-8/wikitop_pt_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -335,7 +334,7 @@ class TestCchardet():
     def test_detect_pt_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/pt/WINDOWS-1252/wikitop_pt_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -344,7 +343,7 @@ class TestCchardet():
     def test_detect_ru_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/ru/UTF-8/wikitop_ru_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -353,7 +352,7 @@ class TestCchardet():
     def test_detect_ru_windows1251(self):
         encoding = "WINDOWS-1251"
         path = r"testdata/ru/WINDOWS-1251/wikitop_ru_WINDOWS-1251.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -362,7 +361,7 @@ class TestCchardet():
     def test_detect_ru_ibm855(self):
         encoding = "IBM855"
         path = r"testdata/ru/IBM855/wikitop_ru_IBM855.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -371,7 +370,7 @@ class TestCchardet():
     def test_detect_ru_koi8r(self):
         encoding = "KOI8-R"
         path = r"testdata/ru/KOI8-R/wikitop_ru_KOI8-R.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -380,7 +379,7 @@ class TestCchardet():
     def test_detect_se_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/se/UTF-8/wikitop_se_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -389,7 +388,7 @@ class TestCchardet():
     def test_detect_se_windows1252(self):
         encoding = "WINDOWS-1252"
         path = r"testdata/se/WINDOWS-1252/wikitop_se_WINDOWS-1252.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -398,7 +397,7 @@ class TestCchardet():
     def test_detect_th_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/th/UTF-8/wikitop_th_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -407,7 +406,7 @@ class TestCchardet():
     def test_detect_th_tis620_1(self):
         encoding = "TIS-620"
         path = r"testdata/th/TIS-620/utffool_th_TIS-620.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -416,7 +415,7 @@ class TestCchardet():
     def test_detect_th_tis620_2(self):
         encoding = "TIS-620"
         path = r"testdata/th/TIS-620/wikitop_th_TIS-620.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -425,7 +424,7 @@ class TestCchardet():
     def test_detect_tr_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/tr/UTF-8/wikitop_tr_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -434,7 +433,7 @@ class TestCchardet():
     def test_detect_tr_iso88599(self):
         encoding = "ISO-8859-9"
         path = r"testdata/tr/ISO-8859-9/wikitop_tr_ISO-8859-9.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -443,7 +442,7 @@ class TestCchardet():
     def test_detect_zh_utf8(self):
         encoding = "UTF-8"
         path = r"testdata/zh/UTF-8/wikitop_zh_UTF-8.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
         print(detected_encoding)
@@ -452,31 +451,35 @@ class TestCchardet():
     def test_detect_zh_gb18030(self):
         encoding = "GB18030"
         path = r"testdata/zh/GB18030/wikitop_zh_GB18030.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)
-        print(detected_encoding)
         eq_(encoding.lower(),detected_encoding['encoding'].lower())
 
 class TestCchardetSpeed():
     def test_speed(self):
-        import chardet
+        try:
+            import chardet
+            has_chardet = True
+        except ImportError:
+            has_chardet = False
         import time
         do_times = 5
         path = r"testdata/wikipediaJa_One_Thousand_and_One_Nights_SJIS.txt"
-        with open(path) as f:
+        with open(path, 'rb') as f:
             msg = f.read()
         # Test chardet
-        result_chardet = 0
-        for i in xrange(do_times):
-            start_chardet = time.time()
-            chardet.detect(msg)
-            result_chardet += (time.time() - start_chardet)
+        if has_chardet:
+            result_chardet = 0
+            for i in range(do_times):
+                start_chardet = time.time()
+                chardet.detect(msg)
+                result_chardet += (time.time() - start_chardet)
+            print('chardet:',1/(result_chardet/do_times), 'call(s)/s')
         # Test cchardet
         result_cchardet = 0
-        for i in xrange(do_times):
+        for i in range(do_times):
             start_cchardet = time.time()
             cchardet.detect(msg)
             result_cchardet += (time.time() - start_cchardet)
-        print('chardet:',1/(result_chardet/do_times), 'call(s)/s')
         print('cchardet:',1/(result_cchardet/do_times), 'call(s)/s')
\ No newline at end of file