- #Python windows base64 encoding issue update
- #Python windows base64 encoding issue code
- #Python windows base64 encoding issue windows 7
So sending large files via email is not very efficient. One problem with this encoding scheme is that it increases the amount of data significantly. However, to use this in practice, you must deal with unexpected characters that might appear in the original string. It is possible to decode a properly encoded string with the above code.
#Python windows base64 encoding issue code
Decoding code in Python def decode_base64(ct): #remove = if there is one ct = ct.replace('=', '') #from the base64 table, convert it to binary base64_dict = ct_bi = "" for i in ct: keys = keys_str = "".join(keys) ct_bi += keys_str #brake it into 8 bits, remove the 0 left ct_bi = for i in range(0, len(ct_bi), 8)] if len(ct_bi) != 8: ct_bi.pop() #convert to binary ct_binary = for i in ct_bi: ct_binary.append(i.encode()) #convert to hex ct_hex = for i in ct_binary: ct_hex.append(hex(int(i, 2))) #convert to char ct_decode = "" for i in ct_hex: ct_decode += chr(int(i, 16)) return ct_decode It is also used to embed images into websites. It converts documents with 8bit data such as emails to ASCII code. After that, we just need to trace back the encoding scheme. Base64 is one of the major encoding schemes of data. The = appears at the end of the string, and at the most 2 times. When decoding a string, we need to be careful not to decode the = sign altogether. With the help of base64.encodestring (s) method, we can encode the string using base64 encoded data into the binary form. Next, we will look at the decoding scheme. For each group, convert it to a corresponding character using a Base64 table. If the last group is shorter than 6 bits, add 0. Next, we break it up into a group of 6 bits. As an example, we will encode the string “Hello”.įirst, we convert each character to a hex code, then convert it into binary. Here, we will look into Base64 without using these libraries to fully understand what is going on. >import base64 >string = "string to be encoded" >encoded = base64.b64encode(b'string') b'c3RyaW5n' >decoded = base64.b64decode(encoded) b'string' For example, Python has a base64 module to support these encodings and decoding, which can be easily used as below. This answer is collected from stackoverflow and reviewed by FixPython community admins, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.Coding Base64 without using libraries (in Python!)īase64 is one of the major encoding schemes of data. This question is answered By – Jim Brissom # assume data contains your decoded image That being said, you can use cStringIO to create such an object from a memory buffer: import cStringIO Second, PIL’s Image.open either accepts a filename, or a file-like (that is, the object has to provide read, seek and tell methods). You can use the btoa () method to encode and transmit data which may otherwise cause communication problems, then transmit it and use the atob () method to decode the data again.
#Python windows base64 encoding issue update
Ok, here is an update after you have edited your original question.įirst of all, remember to use raw strings (prefix the string with ‘r’) when using path delimiters on Windows, to prevent accidentally hitting an escape character. The atob () function decodes a string of data which has been encoded using Base64 encoding. You have to open the file first of course, and read its contents – you cannot simply pass the path to the encode function. With open("yourfile.ext", "rb") as image_file:Įncoded_string = base64.b64encode(image_file.read()) I assume you are doing something along the lines of: import base64 Now we will see solution for issue: Encoding an image file with base64 TypeError: file() argument 1 must be encoded string without NULL bytes, not str Self.image = ImageTk.PhotoImage(Image.open(UUU))īut I get the following error: Traceback (most recent call last):įile "C:\Python26\GUI1.2.9.py", line 473, in įile "C:\Python26\GUI1.2.9.py", line 14, in _init_įile "C:\Python26\GUI1.2.9.py", line 431, in initializeįile "C:\Python26\lib\site-packages\PIL\Image.py", line 1952, in open I tried this snippet: with open("C:\Python26\seriph1.BMP", "rb") as f:
#Python windows base64 encoding issue windows 7
I want the actual image file to be encoded. I encountered the originally reported problem a few days ago with asciidoc 8.6.9 with Python 2.7.6 on 64-bit Windows 7 SP1. How do I specify the image I want to be encoded? I tried using the directory to the image, but that simply leads to the directory being encoded. I want to encode an image into a string using the base64 module.
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