python学习记录三：关于(‘‘, 36)执行报错以及解决方案

代码如下：

from PIL import Image, ImageFilter, ImageFont, ImageDraw

import random


# 随机字母
def rndChar():
    return chr(random.randint(65, 90))


# 随机颜色1：
def rndColor():
    return random.randint(64, 255), random.randint(64, 255), random.randint(64, 255)


# 随机颜色2：
def rndColor2():
    return random.randint(32, 127), random.randint(32, 127), random.randint(32, 127)


# 240 x 60
width = 60 * 4
height = 60
image = Image.new('RGB', (width, height), (255, 255, 255))
# 创建Font对象
font = ImageFont.truetype('', 36)
# 创建Draw对象
draw = ImageDraw.Draw(image)
# 填充每个像素
for x in range(width):
    for y in range(height):
        draw.point((x, y), fill=rndColor())
# 输出文字
for t in range(4):
    draw.text((60 * t + 10, 10), rndChar(), font=font, fill=rndColor2())
# 模糊：
image = image.filter(ImageFilter.BLUR)
image.save('', 'jpeg')

执行报错：

"D:\Program Files\python-3.7.9\" D:/py/test-three/test_01.py
Traceback (most recent call last):
  File "D:/py/test-three/test_01.py", line 26, in <module>
    font = ImageFont.truetype('', 36)
  File "D:\Program Files\python-3.7.9\lib\site-packages\PIL\", line 844, in truetype
    return freetype(font)
  File "D:\Program Files\python-3.7.9\lib\site-packages\PIL\", line 841, in freetype
    return FreeTypeFont(font, size, index, encoding, layout_engine)
  File "D:\Program Files\python-3.7.9\lib\site-packages\PIL\", line 194, in __init__
    font, size, index, encoding, layout_engine=layout_engine
OSError: cannot open resource

进程已结束,退出代码1

分析报错信息以及中truetype源码，“:exception OSError: If the file could not be read.”，分析字体文件无法读取，可本地搜索字体，查看字体名称为“”，将“”改为“”，执行成功，另一种解决方法就是获取字体绝对路径，如“C:\Windows\Fonts\”，更换执行成功。