pep8

src/calibre/ebooks/mobi/utils.py

@@ -256,7 +256,7 @@ def decode_fvwi(byts, flag_size=4):
 def decode_tbs(byts, flag_size=4):
     '''
     Trailing byte sequences for indexing consists of series of fvwi numbers.
-    This function reads the fvwi number and its associated flags. It them uses
+    This function reads the fvwi number and its associated flags. It then uses
     the flags to read any more numbers that belong to the series. The flags are
     the lowest 4 bits of the vwi (see the encode_fvwi function above).
 
@@ -323,7 +323,8 @@ def align_block(raw, multiple=4, pad=b'\0'):
     of 4.
     '''
     extra = len(raw) % multiple
-    if extra == 0: return raw
+    if extra == 0:
+        return raw
     return raw + pad*(multiple - extra)
 
 
@@ -370,7 +371,8 @@ def count_set_bits(num):
 def to_base(num, base=32, min_num_digits=None):
     digits = string.digits + string.ascii_uppercase
     sign = 1 if num >= 0 else -1
-    if num == 0: return ('0' if min_num_digits is None else '0'*min_num_digits)
+    if num == 0:
+        return ('0' if min_num_digits is None else '0'*min_num_digits)
     num *= sign
     ans = []
     while num: