I'm looking to edit a Minecraft Windows 10 level.dat file in python. I've tried using the package nbt and pyanvil but get the error OSError: Not a gzipped file. If I print open("level.dat", "rb").read() I get a lot of nonsensical data. It seems like it needs to be decoded somehow, but I don't know what decoding it needs. How can I open (and ideally edit) one of these files?

Thank you all so much in advance.

CodePudding user response：

You'll have to give the path either relative to the current working directory

path/to/file.dat

Or you can use the absolute path to the file

C:user/dir/path/to/file.dat

Read the data,replace the values and then write it

# Read in the file
with open('file.dat', 'r') as file :
  filedata = file.read()

# Replace the target string
filedata = filedata.replace('yuor replacement or edit')

# Write the file out again
with open('file.dat', 'w') as file:
  file.write(filedata)

Hope this helps

CodePudding user response：

It seems that you are reading data in binary format using "rb". You just want to read the contents of the file using "r" like this :

with open('level.dat', 'r') as f :
  leveldata = f.read()

Editing will depend on what you want to do... Maybe you want to replace all the content inside that file, or maybe a specific line or a specific part of each line. Pehaps you just need to append more content.