自己的gitbook的template，之前正常运行没问题。
现在运行报错：
rm -f book.json Traceback (most recent call last): File "/Users/crifan/dev/dev_root/gitbook/GitbookTemplate/gitbook_template/common/tools/generate_book_json.py", line 178, in <module> templateJson = json.load(templateJsonFp, encoding="utf-8") File "/Users/crifan/.pyenv/versions/3.9.4/lib/python3.9/json/__init__.py", line 293, in load return loads(fp.read(), File "/Users/crifan/.pyenv/versions/3.9.4/lib/python3.9/json/__init__.py", line 359, in loads return cls(**kw).decode(s) TypeError: __init__() got an unexpected keyword argument 'encoding' make: *** [../../common/gitbook_makefile.mk:292: generate_book_json] Error 1
去看了下，源码是：
common/tools/generate_book_json.py
templateJson = json.load(templateJsonFp, encoding="utf-8")
-》很是奇怪，为何会报错encoding多出参数？
难道是新版9.4的Python，不需要encoding了？
去找找看看
python 3.9 TypeError __init__ got an unexpected keyword argument encoding
The json.load call in VirtualCodebase._get_scan_data_helper provide a encoding=’utf-8′ argument that was removed in Python 3.9.
还真是
Changed in version 3.9: The keyword argument encoding has been removed.
找找看，为何被移除
python 3.9 json.load encoding removed
This is a followup of issue33461. The warning says about removal of the encoding parameter in 3.9 . It’s already ignored since 3.1 hence I assume this should be raising a TypeError in 3.9 removing the deprecation warning.
意思是：自从Python 3.1，其实json.load的encoding早就被移除了？
不管如何，看起来是，从：2020-01-20，早就移除掉了
python内部自动检测编码方式，无需encoding了
具体实现逻辑：
def loads(s, *, cls=None, object_hook=None, parse_float=None, parse_int=None, parse_constant=None, object_pairs_hook=None, **kw): 。。。 s = s.decode(detect_encoding(s), 'surrogatepass')
【总结】】
Python 3.9之后，去掉了json.load的encoding参数
原因：内部可以自动判断文件编码，无需encoding
此处解决办法：直接去掉encoding参数：
templateJson = json.load(templateJsonFp)
即可
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