你好，我想解码一个base64字符串，这是一个图像，我用JavaScript编码的方式，我编码它是我把它变成一个位图，然后编码位图，现在我试图解码它在Python中，这是我做的，我有一个hash.txt文件，其中有base64数据，我复制文件，把它放在变量定义，它的作品，然后我尝试f.read（），它失败了，这是代码

import base64
from PIL import Image
from io import BytesIO

def decode_base64_to_bitmap_and_save(base64_string, output_file_path):
    try:
        # Decode the base64 string to bytes
        decoded_bytes = base64.b64decode(base64_string)

        # Create a BytesIO stream from the decoded bytes
        byte_stream = BytesIO(decoded_bytes)

        # Open the image using Pillow (PIL)
        decoded_bitmap = Image.open(byte_stream)

        # Save the decoded bitmap as a PNG file
        decoded_bitmap.save(output_file_path, "PNG")

        return True  # Successful save
    except Exception as e:
        print(f"Error: {e}")
        return False  # Saving failed

# Example usage:
file_path = "hash.txt"
with open(file_path, "r") as file:

    base64_string = file.read()

output_file_path = "output.png"

if decode_base64_to_bitmap_and_save(base64_string, output_file_path):
    print(f"Image saved as {output_file_path}")
else:
    print("Failed to decode and save the image.")

我试过f.read我试过+“==”到f.read添加填充我试过删除\n与“”所以我删除所有的\n从base64
这是编码文件

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Base64;

Bitmap imageBitmap = (Bitmap) extras.get("data");
String encodedString = bitMapToBase64(imageBitmap);
AfterPictureBase64(encodedString);

this是base64文件