To convert some encoded data (e.g. bytes, electrical signals) to some representation ready for further processing (e.g. string, object, picture)
Questions tagged [decode]
4353 questions
1003
votes
14 answers
UnicodeDecodeError: 'charmap' codec can't decode byte X in position Y: character maps to
I'm trying to get a Python 3 program to do some manipulations with a text file filled with information. However, when trying to read the file I get the following error:
Traceback (most recent call last):
File "SCRIPT LOCATION", line NUMBER, in…
Eden Crow
- 14,684
- 11
- 26
- 24
465
votes
13 answers
UnicodeDecodeError, invalid continuation byte
Why is the below item failing? Why does it succeed with "latin-1" codec?
o = "a test of \xe9 char" #I want this to remain a string as this is what I am receiving
v = o.decode("utf-8")
Which results in:
Traceback (most recent call last):
File…
RuiDC
- 8,403
- 7
- 26
- 21
378
votes
19 answers
Encoding as Base64 in Java
I need to encode some data in the Base64 encoding in Java. How do I do that? What is the name of the class that provides a Base64 encoder?
I tried to use the sun.misc.BASE64Encoder class, without success. I have the following line of Java 7…
Jury A
- 19,192
- 24
- 69
- 93
335
votes
10 answers
How do you decode Base64 data in Python?
I have the following piece of Base64 encoded data, and I want to use the Python Base64 module to extract information from it. It seems that module does not work. How can I make it…
ladyfafa
- 6,629
- 7
- 26
- 22
232
votes
0 answers
Decode & back to & in JavaScript
I have strings like
var str = 'One & two & three';
rendered into HTML by the web server. I need to transform those strings into
'One & two & three'
Currently, that's what I am doing (with help of…
Art
- 23,747
- 29
- 89
- 101
188
votes
6 answers
UnicodeEncodeError: 'charmap' codec can't encode - character maps to , print function
I am writing a Python (Python 3.3) program to send some data to a webpage using POST method. Mostly for debugging process I am getting the page result and displaying it on the screen using print() function.
The code is like…
Carlos Eugenio Thompson Pinzón
- 2,656
- 4
- 18
- 22
187
votes
6 answers
Base64 Java encode and decode a string
I want to encode a string into base64 and transfer it through a socket and decode it back.
But after decoding it gives different answer.
Following is my code and result is "77+9x6s="
import javax.xml.bind.DatatypeConverter;
public class f{
…
Sameera Kumarasingha
- 2,908
- 3
- 25
- 41
186
votes
12 answers
How can I unescape HTML character entities in Java?
Basically, I would like to decode a given HTML document, and replace all special characters, such as " " → " " and ">" → ">".
In .NET, we can make use of the HttpUtility.HtmlDecode method.
What's the equivalent function in Java?
yinyueyouge
- 3,684
- 4
- 25
- 22
124
votes
5 answers
Code for decoding/encoding a modified base64 URL (in ASP.NET Framework)
I want to base64 encode data to put it in a URL and then decode it within my HttpHandler.
I have found that Base64 Encoding allows for a '/' character which will mess up my UriTemplate matching. Then I found that there is a concept of a "modified…
Kirk Liemohn
- 7,733
- 9
- 46
- 57
119
votes
7 answers
How do I decode a string with escaped unicode?
I'm not sure what this is called so I'm having trouble searching for it. How can I decode a string with unicode from http\u00253A\u00252F\u00252Fexample.com to http://example.com with JavaScript? I tried unescape, decodeURI, and decodeURIComponent…
styfle
- 22,361
- 27
- 86
- 128
114
votes
9 answers
How to decode a QR-code image in (preferably pure) Python?
TL;DR: I need a way to decode a QR-code from an image file using (preferable pure) Python.
I've got a jpg file with a QR-code which I want to decode using Python. I've found a couple libraries which claim to do this:
PyQRCode (website here) which…
kramer65
- 50,427
- 120
- 308
- 488
112
votes
6 answers
AJAX POST and Plus Sign ( + ) -- How to Encode?
I'm POSTing the contents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents). The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then…
jalperin
- 2,664
- 9
- 30
- 32
102
votes
6 answers
How to decode the JWT encoded token payload on client-side in angular?
I am getting one JWT encoded access token from my API in response. But I am not able to decode it and get it in JSON format. I tried using the angular2-jwt library for it, but it did not worked. I am writing my code below:
…
Sunny Parekh
- 1,049
- 2
- 7
- 8
90
votes
7 answers
Decoding facebook's blob video url
I found blob:https://www.facebook.com/c7e5a634-2343-4464-a03e-4a1987301ca1 video source on Facebook's private group and I really can't download the video by entering the url nor am I able to decode. Is there any way to decode this?
ujwal dhakal
- 2,289
- 2
- 30
- 50
81
votes
6 answers
How to fix ''UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 29815: character maps to ''?
At the moment, I am trying to get a Python 3 program to do some manipulations with a text file filled with information, through the Spyder IDE/GUI. However, when trying to read the file I get the following error:
File…
user3443027
- 951
- 1
- 7
- 9