I’m using Max OS X 10.10.3, and I finally got the graphics.py to show in Python 3, before it was saying no module existed.
However, now when I try import graphics, or from graphics import *, I get the message:
"source code string cannot contain null bytes"
Does any Mac user (using Python 3) perhaps know what is wrong? Has anyone used the Zelle book and his graphics.py module? Thanks.
WhiZTiM
21.2k4 gold badges43 silver badges68 bronze badges
asked Jul 5, 2015 at 18:46
5
For posterity: I had the same problem and fixed it using,
sed -i 's/\x0//g' FILENAME
The file seemed to be messed up in numerous ways (wrong endings, etc); no idea how…
See https://stackoverflow.com/a/2399817/230468
answered Aug 22, 2016 at 19:39
DilithiumMatrixDilithiumMatrix
17.9k22 gold badges77 silver badges119 bronze badges
1
I am using Visual Studio Code, the encoding was set to UTF-16 LE.
You can check the encoding on the right bottom side of VSCode. Just click on the encoding and select «save with encoding» and select UTF-8. It worked perfectly.
answered Jun 13, 2019 at 4:42
1
I got this message when I wanted to use eval for my input for my function that sometimes it takes string or int/float but when it takes numpy numbers, it throws this exception, eval(number).
My solution was eval(str(number)).
answered Aug 5, 2019 at 6:09
I just encountered this problem, which is usually caused by the encoding format. You can use Notepad++ to change the encoding format of python files to UTF-8.
answered Nov 28, 2018 at 3:20
This kind of error is not from your project source code. This kind of error emerges from your python interpreter. So the best solution is to set your python interpreter in your project env directory. or set the interpreters virtual env properly using your IDE’s interpreter configuration.
answered Apr 23, 2016 at 9:15
Open your file with an editor that can show you all invisible character.
You will see where is the invalid char, just delete and re-type it.
If you are on mac you can do it with Coda > Open your file > Show invisible characters.
answered Apr 16, 2019 at 9:20
1
- Go to python folder
python36/Lib/site-packages/scipy/ - Open
__init__.py
Change:
from scipy._lib._testutils import PytestTester
to:
from scipy._lib.test__testutils import PytestTester
It worked on my windows 7
Jay Dorsey
3,5632 gold badges18 silver badges24 bronze badges
answered Jul 26, 2019 at 16:30
1
I created a file using windows terminal echo «hello» > hello.py and got this issue. I resolved by creating a new file from notepad
answered May 30, 2021 at 6:42
My problem was the python interpreter, try changing it to the right python directory path
answered Nov 18, 2021 at 14:55
1
I’m using Max OS X 10.10.3, and I finally got the graphics.py to show in Python 3, before it was saying no module existed.
However, now when I try import graphics, or from graphics import *, I get the message:
"source code string cannot contain null bytes"
Does any Mac user (using Python 3) perhaps know what is wrong? Has anyone used the Zelle book and his graphics.py module? Thanks.
WhiZTiM
21.2k4 gold badges43 silver badges68 bronze badges
asked Jul 5, 2015 at 18:46
5
For posterity: I had the same problem and fixed it using,
sed -i 's/\x0//g' FILENAME
The file seemed to be messed up in numerous ways (wrong endings, etc); no idea how…
See https://stackoverflow.com/a/2399817/230468
answered Aug 22, 2016 at 19:39
DilithiumMatrixDilithiumMatrix
17.9k22 gold badges77 silver badges119 bronze badges
1
I am using Visual Studio Code, the encoding was set to UTF-16 LE.
You can check the encoding on the right bottom side of VSCode. Just click on the encoding and select «save with encoding» and select UTF-8. It worked perfectly.
answered Jun 13, 2019 at 4:42
1
I got this message when I wanted to use eval for my input for my function that sometimes it takes string or int/float but when it takes numpy numbers, it throws this exception, eval(number).
My solution was eval(str(number)).
answered Aug 5, 2019 at 6:09
I just encountered this problem, which is usually caused by the encoding format. You can use Notepad++ to change the encoding format of python files to UTF-8.
answered Nov 28, 2018 at 3:20
This kind of error is not from your project source code. This kind of error emerges from your python interpreter. So the best solution is to set your python interpreter in your project env directory. or set the interpreters virtual env properly using your IDE’s interpreter configuration.
answered Apr 23, 2016 at 9:15
Open your file with an editor that can show you all invisible character.
You will see where is the invalid char, just delete and re-type it.
If you are on mac you can do it with Coda > Open your file > Show invisible characters.
answered Apr 16, 2019 at 9:20
1
- Go to python folder
python36/Lib/site-packages/scipy/ - Open
__init__.py
Change:
from scipy._lib._testutils import PytestTester
to:
from scipy._lib.test__testutils import PytestTester
It worked on my windows 7
Jay Dorsey
3,5632 gold badges18 silver badges24 bronze badges
answered Jul 26, 2019 at 16:30
1
I created a file using windows terminal echo «hello» > hello.py and got this issue. I resolved by creating a new file from notepad
answered May 30, 2021 at 6:42
My problem was the python interpreter, try changing it to the right python directory path
answered Nov 18, 2021 at 14:55
1
One of the errors that developers often encounter is the ValueError: Source Code String Cannot Contain Null Bytes.
The error message “ValueError: source code string cannot contain null bytes” typically occurs when we are attempting to pass a string that consist of null bytes as source code to a Python interpreter.
What are Null Bytes?
To understand further the features of the Source code string cannot contain null bytes error, we will know first the meaning of null bytes.
A null byte, also known as the null character or ‘\0‘, is a character with a value of zero.
It serves as a string terminator in different programming languages, including C, C++, and Python.
n addition, Null bytes are used to mark the end of a string, and it shows where the data should stop being interpreted as characters.
Common Causes of the ValueError
Now that we have a already understand of the error and null bytes, let’s know some common causes that may trigger the Source code string cannot contain null bytes error.
Identifying these causes will aid in better understanding the examples and solutions discussed later in this article.
Here are the following common causes of the value error:
- Incorrect File Encoding
- Malicious Input
- Corrupted Data
- Binary File Mishandling
- Incorrect String Manipulation
How the Error Reproduce?
To expand our understanding of the ValueError Source code string cannot contain null bytes error, so let’s show some practical examples where this error may occur.
We will discuss each example in detail and present effective solutions to resolve the value error.
Here’s an example code that can result with the message “source code string cannot contain null bytes”:
example_message = "print('Hello, world!\x00')"
exec(example_message)Output:
Traceback (most recent call last):
File “C:\Users\Dell\PycharmProjects\Python-Code-Example\main.py”, line 2, in
exec(code_string)
ValueError: source code string cannot contain null bytes
In this code, the example_message variable consists of a null byte (\x00) within the string passed to the print function.
When the exec function is called to execute the example_message, it raises a ValueError with the defined error message.
This is the solution to resolve the source code string cannot contain null bytes:
Solution: Remove the Null Byte from the Code String
To resolve this valueerror, you need to remove the null byte from the code string.
One possible solution is to sanitize the code string before executing it by removing any null bytes.
Here’s an updated version of the previous example:
example_message = "print('This is the tutorial for NULL BYTES, world!\x00')"
sanitized_example_string = example_message.replace("\x00", "")
exec(sanitized_example_string)Output:
This is the tutorial for NULL BYTES, world!
FAQs
What does the error message ValueError source code string cannot contain null bytes mean?
This error message shows that there is a null byte (i.e., a byte with a value of 0) in the source code string being processed. Null bytes are not allowed in Python source code strings.
Why am I getting this ValueError source code string cannot contain null bytes?
This error typically occurs when we are working with a source code string that consist of a null byte.
Can null bytes be part of a valid Python source code?
No, null bytes are not valid in Python source code. Python uses null bytes as string terminators internally, so including them in the source code can lead to unexpected behavior or errors.
Conclusion
In conclusion, the ValueError: source code string cannot contain null bytes error occurs when a null byte (a byte with a value of 0) is present in a Python source code string.
Also, we’ve discussed the the common causes an provide an example and solutions to resolve the valueerror.
Additional Resources
- Valueerror: nattype does not support strftime
- Valueerror: need at least one array to concatenate
- Valueerror wrong number of items passed 2 placement implies 1
Do you experience getting the error message “source code string cannot contain null bytes“, whenever you attempt to import graphics, or from graphics import *? .This warning message is shown if the contents of the file include a byte that has a value that is a null value.
What is ValueErrror?
ValueError is the error in python that mostly occurs when you are passing the argument to the built-in functions of the right type. But the value of that argument is invalid. For example, suppose the function accepts an argument of integer type. And you are passing the value by converting the string to an integer. In this case, you will get the ValueErrror.
Solution for the source code string cannot contain null bytes
If you have been experiencing “source code string cannot contain null bytes” problem, then the following possible options may help you fix it:
Solution 1: Remove the null character
Remove the null character at the end of line 41 in the cTurtle.py because, for some unknown reason, line 41 of the cTurtle.py file includes a null character:
$ od -t a cTurtle.py.orig | grep -i nul 0003360 - - - - sp c T u r t l e . p y nul
After the removal of the null character, the module’s operations should go back to their normal state.
Solution 2: Use the sed command
If you want to remove the null characters that are in a file, you may do it quickly and simply by using the sed command that is indicated in the following example:
sed -i 's/\x0//g' FILENAME
This method modifies the file in situ, which is critical if the file is still being used. Passing the parameter -i’ext’ generates a backup of the original file with the ‘ext’ suffix appended to it.
Solution 3: Use pipeline
In the event that the output of sed indicates that nothing was replaced, then you may make use of the following pipeable one-liner using Phyton:
python -c 'import sys; sys.stdout.write(sys.stdin.read().replace("\0", ""))'
You may also discover that some instructions do, in fact, leave the null bytes in place, despite the fact that they are no longer visible, at least not in a terminal running OS X. Hexdump is a useful tool for debugging situations like these.
Conclusion
ValueError is a python exception error that you will get when you are passing the argument to the function of an invalid type. The Valueerror: source code string cannot contain null bytes also comes due to this case. The above method will solve your problems regarding this error.
Вопрос:
Я использую Max OS X 10.10.3, и я наконец получил graphics.py для показа в Python 3, прежде чем он сказал, что модуль не существует.
Однако теперь, когда я пытаюсь выполнить import graphics или from graphics import *, я получаю сообщение:
"source code string cannot contain null bytes"
Может ли любой пользователь Mac (используя Python 3) знать, что не так? Кто-нибудь использовал книгу Zelle и его модуль graphics.py? Спасибо.
Ответ №1
Для потомков: у меня была та же проблема и исправлено это с помощью
sed -i 's/\x0//g' FILENAME
Файл, казалось, был испорчен множеством способов (неправильные окончания и т.д.); не знаю, как…
См. qaru.site/questions/89525/…
Ответ №2
Я только что столкнулся с этой проблемой, которая обычно вызывается форматом кодировки. Вы можете использовать Notepad++, чтобы изменить формат кодирования файлов Python на UTF-8.
Ответ №3
Откройте свой файл с помощью редактора, который может показать вам всех невидимых символов. Вы увидите, где находится недопустимый символ, просто удалите и введите его заново.
Если вы работаете на Mac, вы можете сделать это с помощью Coda> Открыть файл> Показать невидимые символы.
Ответ №4
Я использую код Visual Studio, кодировка была установлена в UTF-16 LE. Вы можете проверить кодировку в правой нижней части VSCode. Просто нажмите на кодировку и выберите “сохранить с кодировкой” и выберите UTF-8. Это сработало отлично.
Ответ №5
- Перейти в папку python
python36/Lib/site-packages/scipy/ - Открыть
__init__.py
Изменение:
from scipy._lib._testutils import PytestTester
в:
from scipy._lib.test__testutils import PytestTester
Он работал на моих окнах 7
Ответ №6
Я получил это сообщение, когда хотел использовать eval для ввода своей функции: иногда он принимает строку или int/float, но когда он принимает числа numpy, он выдает это исключение, eval(number).
Мое решение было eval(str(number)).
Ответ №7
Эта ошибка возникает не из исходного кода проекта. Такая ошибка возникает из вашего интерпретатора python. Поэтому лучшим решением является установка вашего интерпретатора python в каталог env. или правильно настроить интерпретаторы виртуального env, используя конфигурацию интерпретатора IDE.
Ответ №8
У меня такая же ошибка, и решение состоит в том, чтобы удалить библиотеку, и если вы не можете просто удалить ее и переустановить библиотеку. должен работать, он работает для меня…