python-3.x - PIL.UnidentifiedImageError : cannot identify image file

Question

我正在研究 GCP 云函数，并打算编写一个结合两个图像的函数。但是，当我调用该函数时，出现以下错误:

Traceback (most recent call last): File "/env/local/lib/python3.7/site-packages/google/cloud/functions/worker.py", line 346, in run_http_function result = _function_handler.invoke_user_function(flask.request) File "/env/local/lib/python3.7/site-packages/google/cloud/functions/worker.py", line 217, in invoke_user_function return call_user_function(request_or_event) File "/env/local/lib/python3.7/site-packages/google/cloud/functions/worker.py", line 210, in call_user_function return self._user_function(request_or_event) File "/user_code/main.py", line 74, in execute newIntro= generateIntroImage(nameMappings['stdName'], nameMappings['stdPicture'], nameMappings['logo'], nameMappings['stdYear'], nameMappings['font']) File "/user_code/main.py", line 12, in generateIntroImage images.append(Image.open(logo)) File "/env/local/lib/python3.7/site-packages/PIL/Image.py", line 2862, in open "cannot identify image file %r" % (filename if filename else fp) PIL.UnidentifiedImageError: cannot identify image file '/tmp/logo.jpg'

我已经在我的本地机器上运行了这个函数，它按预期工作，但是当我在 GCP 上部署它时，它给出了这个错误并崩溃了。这是我的功能:

from PIL import Image
from PIL import ImageFont
from PIL import ImageDraw

def generateIntroImage(stdName, stdPicture, logo, year, typeFace):
    images = [Image.open(x) for x in [stdPicture, logo]]
    widths, heights = zip(*(i.size for i in images))
    total_width = sum(widths)
    max_height = max(heights)
    new_im = Image.new('RGB', (total_width, max_height))
    x_offset = 0
    for im in images:
        new_im.paste(im, (x_offset,0))
        x_offset += im.size[0]

    font= ImageFont.truetype(typeFace, 70)
    draw= ImageDraw.Draw(new_im)
    draw.text((0, 0), stdName+"'s " +year+" Year Book", (0,0,0),font= font)
    fileName= "/tmp/test.jpg"
    new_im.save(fileName)
    return fileName

这些图像是 .jpg 和 .png 文件。知道有什么问题吗？

Answer 1

在 Google Colab 上也发生在我身上，显然更新 PIL 版本为我解决了这个问题。