ModuleNotFoundError: No module named 'qrcode'

dragon / 2023-08-24 / 原文

W
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 222, in _prepare
    dist = self._prepare_distribution()
  File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 307, in _prepare_distribution
    return self._factory.preparer.prepare_linked_requirement(
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 480, in prepare_linked_requirement
    return self._prepare_linked_requirement(req, parallel_builds)
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 503, in _prepare_linked_requirement
    local_file = unpack_url(
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 253, in unpack_url
    file = get_http_url(
  File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 130, in get_http_url
    from_path, content_type = download(link, temp_dir.path)
  File "/usr/lib/python3/dist-packages/pip/_internal/network/download.py", line 163, in __call__
    for chunk in chunks:
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/progress_bars.py", line 168, in iter
    for x in it:
  File "/usr/lib/python3/dist-packages/pip/_internal/network/utils.py", line 64, in response_chunks
    for chunk in response.raw.stream(
  File "/usr/share/python-wheels/urllib3-1.26.5-py2.py3-none-any.whl/urllib3/response.py", line 576, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "/usr/share/python-wheels/urllib3-1.26.5-py2.py3-none-any.whl/urllib3/response.py", line 541, in read
    raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
  File "/usr/lib/python3.9/contextlib.py", line 135, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/share/python-wheels/urllib3-1.26.5-py2.py3-none-any.whl/urllib3/response.py", line 443, in _error_catcher
    raise ReadTimeoutError(self._pool, None, "Read timed out.")
urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='www.piwheels.org', port=443): Read timed out.
Traceback (most recent call last):
  File "/home/pi/.edublocks/output.py", line 149, in <module>
    import qrcode
ModuleNotFoundError: No module named 'qrcode'

from PIL import Image
import subprocess

# 安装qrcode包
subprocess.call(['pip', 'install', 'image'])
subprocess.call(['pip', 'install', 'qrcode'])


import qrcode

# 需要生成二维码的内容
data = "https://www.example.com" 

# 生成QRCode对象
qr = qrcode.QRCode(
    version=1,
    error_correction=qrcode.constants.ERROR_CORRECT_H,
    box_size=10,
    border=4,
)

qr.add_data(data)
qr.make(fit=True)

img = qr.make_image(fill_color="black", back_color="white")

# 控制二维码图片宽高小于240
max_size = 240
width, height = img.size
if width > max_size:
    ratio = max_size/width
    width = max_size
    height = int(ratio*height)
elif height > max_size:
    ratio = max_size/height
    height = max_size 
    width = int(ratio*width)

# 生成的二维码图片宽高最大为240*240
img = img.resize((width,height))  
path = "/home/pi/xgoPictures/"
img.save(path+'qrcode.png')
# 显示路径下文件名
def showfiles(path):
    files = os.listdir(path)
    for file in files:
        print(file)
    pass

showfiles(path)