Error installing brownie scripts with metamask

As a developer, the Ethereum network works with intelligent contracts, and has probably been faced with problems that install scripts on the Brownie platform. In this article, we are immersed in the Brownie -generated error message when we try to install scripts with metamask.

Explanation of error message

The “non -hexadecimal digit” error is a mysterious message that indicates the problem of code or data used in the installation process. However, after closer control, it seems to be related to the syntax of the hexadecimal values ​​used in the script.

When Brownie runs scripts with the help of Metamask, Ethereum Virtual Machine (EVM) uses the bytes of smart contracts with strength. EVM interprets hexadecimal values ​​as a code and executes them accordingly.

The “brownie” terminal error

In this specific error message, we have the term “non -hexadecimal digit”. This is not a typical error message from Brownie itself, but indicates what can cause the problem. When you run scripts with Metamask with the help of brownie, you may have problems with the syntax or formatting of the hexadecimal values ​​used.

Possible reasons and solutions

Here are some possible reasons and solutions to this error:

* Invalid hexadecimal values ​​: Make sure that all the script has a valid hexadecimal values. In the case of strength, the hexadecimal values ​​should be between 0 and F, including.

* Missing or incorrect “0xprefix : When writing hexadecimal values, they always prefix them with the" 0x "prefix to indicate that they are hexadecimal (for example" 0x1234567890abcdef ").

* Incorrect syntax : Check the syntax errors in the script, such as the use of the missing cooked or accurate precise assemblies.

* Metamask Configuration Problems : Make sure the metamask is correctly configured on the machine and that the brownie can be run for it.

Example Solution

To troubleshoot the problem, you can try a simple test case in the script with Brownie. Here's an example of how to change the deploy.py file to include some basic error checks:

Python

Import the brown

Def Main ():

Make sure metamask is configured correctly

If not brown.is_metro_Client_configured ():

Raising exception (“Metamask configuration problem”)

try:

Install the contract with error handling

Brown.run_scripts ({“script”: “Your_script.py”})

Except for the exception like E:

Print (F “Error: {E}”)

If __NAME__ == “__Main__”:

main()

`

This example code checks that Metamask is correctly configured before trying to install the script. If an error occurs, print the exception message.

Conclusion

The “non -hexadecimal digit” error in the Brownie’s terminal output may be a complex issue for the solution, but it must be able to identify and manage the issues by understanding the formatting requirements of the syntax and hexadecimal values. Remember to verify that the Metamask configuration is correct and test the scripts by checking a basic error before installing them in the blockchain.