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I know this question has been asked much times, but please look once in my problem.
I am sending base64 image data from angular to python flask but when I am processing that base64 data on flask server(python3) then it is giving me the error
TypeError: expected bytes-like object, not str
My Javascript code is:
window['__CANVAS'].toDataURL("image/png");
Output of the above line is:
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUg....."
I am receiving same data on flask server as string.
Code on python server that is using above base 64 data is:
def convert_to_image(base64_code):
image_64_decode = base64.decodebytes(base64_code)
image_result = open('baseimage.jpg', 'wb')
image_result.write(image_64_decode)
img_rgb = cv2.imread('baseimage.jpg')
return img_rgb
then it is giving the following error trace:
File "/home/shubham/py-projects/DX/Web/app/base64toimage.py", line 10, in convert_to_image
image_64_decode = base64.decodebytes(base64_code)
File "/usr/lib/python3.5/base64.py", line 552, in decodebytes
_input_type_check(s)
File "/usr/lib/python3.5/base64.py", line 521, in _input_type_check
raise TypeError(msg) from err
TypeError: expected bytes-like object, not str
above python function working fine if I am converting the image using this function
import base64
with open("t.png", "rb") as imageFile:
str = base64.b64encode(imageFile.read())
print str
please help me to solve this question? I am new to python.
237
To solve the Python "TypeError: a bytes-like object is required, not 'str'", encode the str to bytes, e.g. my_str. encode('utf-8') . The str. encode method returns an encoded version of the string as a bytes object.
Bytes-like object in python In Python, a string object is a series of characters that make a string. In the same manner, a byte object is a sequence of bits/bytes that represent data. Strings are human-readable while bytes are computer-readable. Data is converted into byte form before it is stored on a computer.
The Python "TypeError: cannot use a string pattern on a bytes-like object" occurs when we try to use a string pattern to match a bytes object. To solve the error, use the decode() method to decode the bytes object, e.g. my_bytes. decode('utf-8') .
base64.decodebytes only accepts byte arrays, use base64.b64decode instead it accepts Strings as well
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