相关疑难解决方法(0)

我试图计算JSON文件中的行. 单击此处以访问我的JSON文件.

我尝试使用下面的代码来计算行数.

input = open("json/world_bank.json")
i=0
for l in input:
    i+=1
print(i)

但上面的代码抛出了UniCodeDecode错误,如下所示.

---------------------------------------------------------------------------
UnicodeDecodeError                        Traceback (most recent call last)
<ipython-input-17-edc88ade7225> in <module>()
      2 
      3 i=0
----> 4 for l in input:
      5     i+=1
      6 

C:\Users\Subbi Reddy\AppData\Local\Continuum\Anaconda3\lib\encodings\cp1252.py in decode(self, input, final)
     21 class IncrementalDecoder(codecs.IncrementalDecoder):
     22     def decode(self, input, final=False):
---> 23         return codecs.charmap_decode(input,self.errors,decoding_table)[0]
     24 
     25 class StreamWriter(Codec,codecs.StreamWriter):

UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 3979: character maps to <undefined>

然后我在open函数中包含了编码参数,如下所示.

input = open("json/world_bank.json",encoding="utf8")

然后它开始工作并输出为500.

据我所知,python open应该将"utf8"视为默认编码.

我在这里错了.