如何将一个非常大的字符串转换成二维码？

import qrcode

def split_string(string, chunk_size):
    return [string[i:i+chunk_size] for i in range(0, len(string), chunk_size)]

def generate_qr_code(data):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_L,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)
    return qr.make_image(fill_color="black", back_color="white")

def combine_qr_codes(qr_codes):
    width = sum([qr.size[0] for qr in qr_codes])
    height = max([qr.size[1] for qr in qr_codes])
    combined_image = Image.new('RGB', (width, height), color='white')
    x_offset = 0
    for qr in qr_codes:
        combined_image.paste(qr, (x_offset, 0))
        x_offset += qr.size[0]
    return combined_image

def save_qr_code(image, filename):
    image.save(filename)

def display_qr_code(image):
    image.show()

# 示例用法
input_string = "这是一个非常大的字符串，用于演示如何将其转换成二维码。"
chunk_size = 100  # 每个分割块的大小

# 分割字符串
chunks = split_string(input_string, chunk_size)

# 生成二维码
qr_codes = [generate_qr_code(chunk) for chunk in chunks]

# 组合二维码
combined_qr_code = combine_qr_codes(qr_codes)

# 保存或展示二维码
save_qr_code(combined_qr_code, "qr_code.png")
display_qr_code(combined_qr_code)