Merge pull request #366 from BeyondYourself/develop

add the missing improt for east_process.py and format some codes

ppocr/data/det/east_process.py

@@ -16,7 +16,7 @@ import math
 import cv2
 import numpy as np
 import json
-
+import sys
 
 class EASTProcessTrain(object):
     def __init__(self, params):
@@ -78,7 +78,7 @@ class EASTProcessTrain(object):
         dst_polys = []
         rand_degree_ratio = np.random.rand()
         rand_degree_cnt = 1
-        if rand_degree_ratio > 0.333 and rand_degree_ratio < 0.666:
+        if 0.333 < rand_degree_ratio < 0.666:
             rand_degree_cnt = 2
         elif rand_degree_ratio > 0.666:
             rand_degree_cnt = 3
@@ -138,7 +138,7 @@ class EASTProcessTrain(object):
                 continue
             if p_area > 0:
                 #'poly in wrong direction'
-                if tag == False:
+                if not tag:
                     tag = True  #reversed cases should be ignore
                 poly = poly[(0, 3, 2, 1), :]
             validated_polys.append(poly)