Modify bytes combination

pytchat/paramgen/arcparam.py

@@ -12,6 +12,7 @@ Author: taizan-hokuto (2019) @taizan205
 ver 0.0.1 2019.10.05
 '''
 
+
 def _gen_vid(video_id):
     """generate video_id parameter.
     Parameter
@@ -23,7 +24,7 @@ def _gen_vid(video_id):
         bytes : base64 encoded video_id parameter.
     """
     header_magic = b'\x0A\x0F\x1A\x0D\x0A'
-    header_id =  video_id.encode()
+    header_id = video_id.encode()
     header_sep_1 = b'\x1A\x13\xEA\xA8\xDD\xB9\x01\x0D\x0A\x0B'
     header_terminator = b'\x20\x01'
 
@@ -40,42 +41,46 @@ def _gen_vid(video_id):
         b64enc(reduce(lambda x, y: x+y, item)).decode()
     ).encode()
 
+
 def _nval(val):
     """convert value to byte array"""
-    if val<0: raise ValueError
+    if val < 0:
+        raise ValueError
     buf = b''
     while val >> 7:
         m = val & 0xFF | 0x80
-        buf += m.to_bytes(1,'big')
+        buf += m.to_bytes(1, 'big')
         val >>= 7
-    buf += val.to_bytes(1,'big')
+    buf += val.to_bytes(1, 'big')
     return buf
 
+
 def _build(video_id, seektime, topchat_only):
     switch_01 = b'\x04' if topchat_only else b'\x01'
     if seektime < 0:
-        times =_nval(0)
-        switch = b'\x04'       
-    elif seektime == 0:  
-        times =_nval(1)
-        switch = b'\x03'       
+        times = _nval(0)
+        switch = b'\x04'
+    elif seektime == 0:
+        times = _nval(1)
+        switch = b'\x03'
     else:
-        times =_nval(int(seektime*1000000))
+        times = _nval(int(seektime*1000000))
         switch = b'\x03'
     parity = b'\x00'
 
-    header_magic= b'\xA2\x9D\xB0\xD3\x04'
-    sep_0       = b'\x1A'
-    vid         = _gen_vid(video_id)
-    time_tag    = b'\x28'
-    timestamp1  = times
-    sep_1       = b'\x30\x00\x38\x00\x40\x00\x48'
-    sep_2       = b'\x52\x1C\x08\x00\x10\x00\x18\x00\x20\x00'
-    chkstr      = b'\x2A\x0E\x73\x74\x61\x74\x69\x63\x63\x68\x65\x63\x6B\x73\x75\x6D\x40'
-    sep_3       = b'\x00\x58\x03\x60'
-    sep_4       = b'\x68' + parity + b'\x72\x04\x08'
-    sep_5       = b'\x10' + parity + b'\x78\x00'
-    body = [
+    header_magic = b'\xA2\x9D\xB0\xD3\x04'
+    sep_0 = b'\x1A'
+    vid = _gen_vid(video_id)
+    time_tag = b'\x28'
+    timestamp1 = times
+    sep_1 = b'\x30\x00\x38\x00\x40\x00\x48'
+    sep_2 = b'\x52\x1C\x08\x00\x10\x00\x18\x00\x20\x00'
+    chkstr = b'\x2A\x0E\x73\x74\x61\x74\x69\x63\x63\x68\x65\x63\x6B\x73\x75\x6D\x40'
+    sep_3 = b'\x00\x58\x03\x60'
+    sep_4 = b'\x68' + parity + b'\x72\x04\x08'
+    sep_5 = b'\x10' + parity + b'\x78\x00'
+
+    body = b''.join([
         sep_0,
         _nval(len(vid)),
         vid,
@@ -90,18 +95,17 @@ def _build(video_id, seektime, topchat_only):
         sep_4,
         switch_01,
         sep_5
-    ]
+    ])
 
-    body = reduce(lambda x, y: x+y, body)
-    
-    return  urllib.parse.quote(
-                b64enc( header_magic +
-                        _nval(len(body)) +
-                        body
-                ).decode()
-            )
+    return urllib.parse.quote(
+        b64enc(header_magic +
+               _nval(len(body)) +
+               body
+               ).decode()
+    )
 
-def getparam(video_id, seektime = 0, topchat_only = False):
+
+def getparam(video_id, seektime=0, topchat_only=False):
     '''
     Parameter
     ---------