将JSON文件读取为 pandas 数据框? [英] Read json file as pandas dataframe?

问题描述

我正在使用python 3.6并尝试使用以下代码将json文件(350 MB)下载为pandas数据帧.但是，出现以下错误:

I am using python 3.6 and trying to download json file (350 MB) as pandas dataframe using the code below. However, I get the following error:

data_json_str = "[" + ",".join(data) + "]
"TypeError: sequence item 0: expected str instance, bytes found

如何解决该错误?

import pandas as pd

# read the entire file into a python array
with open('C:/Users/Alberto/nutrients.json', 'rb') as f:
   data = f.readlines()

# remove the trailing "\n" from each line
data = map(lambda x: x.rstrip(), data)

# each element of 'data' is an individual JSON object.
# i want to convert it into an *array* of JSON objects
# which, in and of itself, is one large JSON object
# basically... add square brackets to the beginning
# and end, and have all the individual business JSON objects
# separated by a comma
data_json_str = "[" + ",".join(data) + "]"

# now, load it into pandas
data_df = pd.read_json(data_json_str)

推荐答案

如果以二进制文件('rb')打开文件，则将获得字节.怎么样:

If you open the file as binary ('rb'), you will get bytes. How about:

with open('C:/Users/Alberto/nutrients.json', 'rU') as f:

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