python3 compatible

pdf417.py

@@ -22,40 +22,48 @@ def add_quiet_zone(im):
 def get_img(img_path):
     return Image.open(img_path)
 
+
 def print_img_info(im):
     info = im.info
     for item in info.items():
-        print item[0], ': ', item[1]
-    print 'image mode: ', im.mode
-    print 'image size: ', im.size
-    print 'file format: ', im.format
-    print 'image band: ', im.getbands()
-    print 'image box: ', im.getbbox()
+        print (item[0], ': ', item[1])
+    print('image mode: ', im.mode)
+    print('image size: ', im.size)
+    print('file format: ', im.format)
+    print('image band: ', im.getbands())
+    print('image box: ', im.getbbox())
+
 
 def each_row(im, start, end, step=1):
     for y in range(start, end, step):
         yield list(im.crop((2, y, im.size[0]-2, y+1)).getdata())
 
+
 # not in use
 def each_column(im, start, end, step=1):
     for x in range(start, end, step):
         yield list(im.crop((x, 0, x+1, im.size[1])).getdata())
 
+
 def reformat(row_data):
     return [(i[0], len(list(i[1]))) for i in itertools.groupby(row_data)]
 
 
 def get_min_width(row):
     return row[1][1]
 
+
 def row2syms(row, mw):
-    return "".join([str(i[1]/mw) for i in row])
+    return "".join([str(int(i[1]/mw)) for i in row])
+
 
 def get_cluster(sym):
     return (int(sym[0])-int(sym[2])+int(sym[4])-int(sym[6])+9)%9
 
 
 pdf417_flag = False
+
+
 def get_codeword(syms, which):
     global pdf417_flag
     start = which*8-8
@@ -71,13 +79,14 @@ def get_codeword(syms, which):
         return 'end'
 
     cluster = get_cluster(sym)
-    k = cluster/3
+    k = int(cluster/3)
     for j in range(0,929):
         if sym == codewords_tbl[k][j]:
             return (k, j)
 
     return False
 
+
 def decode_part(part):
     global text_submode, text_shift
 
@@ -190,7 +199,7 @@ def decode_cw(cw):
 
 
 def decode_text(cw):
-    H = cw/30
+    H = int(cw/30)
     L = cw%30
 
     return (decode_part(H), decode_part(L))
@@ -209,27 +218,35 @@ def get_cwinfo(codewords):
     length = len(codewords)
     z = l2%30
     v = l3%30
-    error_level = (z - (length-1)%3)/3
+    error_level = int((z - (length-1)%3)/3)
     num_of_rows = v+1
-    return dict({'error_level':error_level, 'num_of_rows':num_of_rows})
+    return dict({'error_level': error_level, 'num_of_rows': num_of_rows})
+
 
 def filter_quitezone(row_data):
-    if row_data[0][0] == 255:  row_data = row_data[1:]
-    if row_data[-1][0] == 255: row_data = row_data[0:-1]
+    if row_data[0][0] == 255:
+        row_data = row_data[1:]
+    if row_data[-1][0] == 255:
+        row_data = row_data[0:-1]
     return row_data
 
+
 def filter_se_pattern(cw_of_row):
     return [i[1] for i in cw_of_row[1:-1]]
 
+
 def filter_err(codewords_list, error_level):
     return codewords_list[:-2**(error_level+1)]
 
+
 def filter_row_indicator(codewords):
     return [k for i in codewords for k in i[1:-1]]
 
+
 def get_content(codewords):
     skip = ['ll', 'ps', 'ml', 'al', 'pl', 'as']
-    return "".join( [str(k) for i in codewords for k in i if k not in skip] )
+    return "".join( [str(k) for i in codewords for k in i if k not in skip])
+
 
 def _reset_global_vars():
     global text_shift, text_submode, pdf417_flag
@@ -259,7 +276,7 @@ def pdf417_decode(img_path):
 
         syms = row2syms(row, mw)
         #print 'Syms: ', syms
-        end = len(syms)/8+1
+        end = int(len(syms)/8+1)
         for i in range(1, end):
             sym = get_codeword(syms, i)
             cw_of_row.append(sym)
@@ -293,4 +310,4 @@ def pdf417_decode(img_path):
 
 if __name__ == '__main__':
     ret = pdf417_decode(sys.argv[1])
-    print ret
+    print (ret)