[英]Error: a bytes-like object is required, not 'str' (cPickle, Python)
我有以下錯誤...
被引用的代碼是這樣的:
from hog import HOG
import dataset
import argparse
import _pickle as cPickle
import mahotas
import cv2
ap = argparse.ArgumentParser()
ap.add_argument("-m", "--model", required = True,
help = "path to where the model will be stored")
ap.add_argument("-i", "--image", required = True,
help = "path to the image file")
args = vars(ap.parse_args())
model = open(args["model"]).read()
model = cPickle.loads(model)
hog = HOG(orientations = 18, pixelsPerCell = (10, 10),
cellsPerBlock = (1, 1), normalize = True)
image = cv2.imread(args["image"])
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
blurred = cv2.GaussianBlur(gray, (5, 5), 0)
edged = cv2.Canny(blurred, 30, 150)
(cnts, _) = cv2.findContours(edged.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cnts = sorted([(c, cv2.boundingRect(c)[0]) for c in cnts], key =lambda x: x[1])
for (c, _) in cnts:
(x, y, w, h) = cv2.boundingRect(c)
if w >= 7 and h >= 20:
roi = gray[y:y + h, x:x + w]
thresh = roi.copy()
T = mahotas.thresholding.otsu(roi)
thresh[thresh > T] = 255
thresh = cv2.bitwise_not(thresh)
thresh = dataset.deskew(thresh, 20)
thresh = dataset.center_extent(thresh, (20, 20))
cv2.imshow("thresh", thresh)
hist = hog.describe(thresh)
digit = model.predict(hist)[0]
print
"I think that number is: %d" % (digit)
cv2.rectangle(image, (x, y), (x + w, y + h),
(0, 255, 0), 1)
cv2.putText(image, str(digit), (x - 10, y - 10),
cv2.FONT_HERSHEY_SIMPLEX, 1.2, (0, 255, 0), 2)
cv2.imshow("image", image)
cv2.waitKey(0)
這是“鏈接”到另一部分(同一軟件包中的另一個.py文件...),它是:
from sklearn.svm import LinearSVC
from hog import HOG
import dataset
import argparse
import _pickle as cPickle
ap = argparse.ArgumentParser()
ap.add_argument("-d", "--dataset", required = True,
help = "path to the dataset file")
ap.add_argument("-m", "--model", required = True,
help = "path to where the model will be stored")
args = vars(ap.parse_args())
(digits, target) = dataset.load_digits(args["dataset"])
data = []
hog = HOG(orientations = 18, pixelsPerCell = (10, 10),
cellsPerBlock = (1, 1), normalize = True)
for image in digits:
image = dataset.deskew(image, 20)
image = dataset.center_extent(image, (20, 20))
hist = hog.describe(image)
data.append(hist)
model = LinearSVC(random_state = 42)
model.fit(data, target)
f = open(args["model"], "w")
f.write(str(cPickle.dumps(model)))
f.close()
注意:在這一行---> f.write(str(cPickle.dumps(model)))
我自己將其f.write(str(cPickle.dumps(model)))
為str
因為當我嘗試執行最后一個代碼塊時,它給出了錯誤。
順便說一句,有人知道為什么它會給出CMD中顯示的錯誤?
謝謝
嘗試以字節模式打開文件。 所以更換
f = open(args["model"], "w")
與
f = open(args["model"], "wb")
您需要以字節而不是文本的形式來讀取和讀取泡菜:
# Reading
with open(args['model'], 'b') as f:
model = cPickle.load(f)
...
# Writing
with open(args['model'], 'wb') as f:
cPickle.dump(model, f, 2)
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