Convert image into hexadecimal format with Python

Question

I have a jpg file under the tmp folder.

upload_path = /tmp/resized-test.jpg

I have been using the codes below:

Method 1

with open(upload_path, "rb") as image_file:
    encoded_string = base64.b64encode(image_file.read())

Method 2

def imgToHex(file):
    string = ''
    with open(file, 'rb') as f:
        binValue = f.read(1)
        while len(binValue) != 0:
            hexVal = hex(ord(binValue))
            string += '\\' + hexVal
            binValue = f.read(1)
    string = re.sub('0x', 'x', string) # Replace '0x' with 'x' for your needs
    return string
imgToHex(upload_path)

But none of them are working as I want.

Pansul Bhatt · Accepted Answer · 2017-08-07 10:31:30Z

9

You can use the binascii package for this. It will convert it in to a hex string.

import binascii
filename = 'test.png'
with open(filename, 'rb') as f:
    content = f.read()
print(binascii.hexlify(content))

answered Aug 7, 2017 at 10:31

Pansul Bhatt

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2 Comments

Onur Degerli Over a year ago

Thanks for your solution @pansul-bhatt but when I try to set it into reponse, I get this error: "raise TypeError(repr(o) + \" is not JSON serializable\")" My return code is like this: return { 'header': { 'Content-Type': content_type }, 'body': encoded_string }

Onur Degerli Over a year ago

Actually, I am trying to apply in AWS Lambda. When I try to give the response like above, I get this error.

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