[英]Convert JSON file into proper format using python pandas
我想將 JSON 文件轉換為正確的格式。 我有一個 JSON 文件,如下所示:
{
"fruit": "Apple",
"size": "Large",
"color": "Red",
"details":"|seedless:true|,|condition:New|"
},
{
"fruit": "Almond",
"size": "small",
"color": "brown",
"details":"|Type:dry|,|seedless:true|,|condition:New|"
}
您可以在詳細信息中看到數據可能會有所不同。
我想把它改成:
{
"fruit": "Apple",
"size": "Large",
"color": "Red",
"seedless":"true",
"condition":"New",
},
{
"fruit": "Almond",
"size": "small",
"color": "brown",
"Type":"dry",
"seedless":"true",
"condition":"New",
}
我曾嘗試使用 Pandas 在 python 中這樣做:
import json
import pandas as pd
import re
df = pd.read_json("data.json",lines=True)
#I tried to change the pattern of data in details column as
re1 = re.compile('r/|(.?):(.?)|/')
re2 = re.compile('r\"(.*?)\":\"(.*?)\"')
df.replace({'details' :re1}, {'details' : re2},inplace = True, regex = True);
但是,在詳細信息列的所有行中都將輸出作為“對象”。
嘗試這個,
for d in data:
details = d.pop('details')
d.update(dict(x.split(":") for x in details.split("|") if ":" in x))
print(data)
[{'color': 'Red',
'condition': 'New',
'fruit': 'Apple',
'seedless': 'true',
'size': 'Large'},
{'Type': 'dry',
'color': 'brown',
'condition': 'New',
'fruit': 'Almond',
'seedless': 'true',
'size': 'small'}]
您可以將(列表)字典轉換為 Pandas 數據框。
import pandas as pd
# data is a list of dictionaries
data = [{
"fruit": "Apple",
"size": "Large",
"color": "Red",
"details":"|seedless:true|,|condition:New|"
},
{
"fruit": "Almond",
"size": "small",
"color": "brown",
"details":"|Type:dry,|seedless:true|,|condition:New|"
}]
# convert to data frame
df = pd.DataFrame(data)
# remove '|' from details and convert to list
df['details'] = df['details'].str.replace(r'\|', '').str.split(',')
# explode list => one row for each element
df = df.explode('details')
# split details into name/value pair
df[['name', 'value']] = df['details'].str.split(':').apply(lambda x: pd.Series(x))
# drop details column
df = df.drop(columns='details')
print(df)
fruit size color name value
0 Apple Large Red seedless true
0 Apple Large Red condition New
1 Almond small brown Type dry
1 Almond small brown seedless true
1 Almond small brown condition New
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