Python中的NASA Weather Insight API

Question

您好，我正在尝试从Mars Insight API显示火星天气。发生的问题是数据以JSON格式返回并且具有三个级别API Documentation。我可以用3-4种不同的方法来拉主键，但是当我尝试获得次要或三次键时，也就可以了。

import requests
import json
import pandas as pd
from pandas.io.json import json_normalize

API_url = "https://api.nasa.gov/insight_weather/?api_key=nTal99zKlhGbl0N8F0V9iUofifMdcwyOHw64CrVm&feedtype=json&ver=1.0"
API_data = requests.get(API_url).json()

# define weather data attributes

#AT = {'AT':API_data['sol_keys'[1,2,3]]}
#PRE = {'PRE':API_data['sol_keys']}
#HWS = {'HWS':API_data['sol_keys']}
#Season= {'Season':API_data['sol_keys']}
#WD = {'WD':API_data['sol_keys']}
#most_common = {'most_common':API_data['sol_keys']}

context = {'sol_keys': API_data["sol_keys"]}

data =json_normalize(API_data, 'sol_keys', '301','AT')

print (data)

Answer 1

使用递归展平嵌套的dicts

• Thinking Recursively in Python
• Flattening JSON objects in Python
• flatten
• flatten_json功能，将用于展平data

def flatten_json(nested_json: dict, exclude: list=['']) -> dict:
    """
    Flatten a list of nested dicts.
    """
    out = dict()
    def flatten(x: (list, dict, str), name: str='', exclude=exclude):
        if type(x) is dict:
            for a in x:
                if a not in exclude:
                    flatten(x[a], f'{name}{a}_')
        elif type(x) is list:
            i = 0
            for a in x:
                flatten(a, f'{name}{i}_')
                i += 1
        else:
            out[name[:-1]] = x

    flatten(nested_json)
    return out

import pandas as pd
from pandas.io.json import json_normalize
import requests

API_url = "https://api.nasa.gov/insight_weather/?api_key=nTal99zKlhGbl0N8F0V9iUofifMdcwyOHw64CrVm&feedtype=json&ver=1.0"
API_data = requests.get(API_url).json()

data =json_normalize(API_data, 'sol_keys', '301', 'AT')

df = pd.DataFrame([flatten_json(x) for x in data['AT301']])

输出

  AT_av   AT_ct    AT_mn   AT_mx             First_UTC  HWS_av  HWS_ct  HWS_mn  HWS_mx              Last_UTC   PRE_av  PRE_ct    PRE_mn    PRE_mx  Season  WD_1_compass_degrees WD_1_compass_point  WD_1_compass_right  WD_1_compass_up  WD_1_ct  WD_10_compass_degrees WD_10_compass_point  WD_10_compass_right  WD_10_compass_up  WD_10_ct  WD_11_compass_degrees WD_11_compass_point  WD_11_compass_right  WD_11_compass_up  WD_11_ct  WD_12_compass_degrees WD_12_compass_point  WD_12_compass_right  WD_12_compass_up  WD_12_ct  WD_13_compass_degrees WD_13_compass_point  WD_13_compass_right  WD_13_compass_up  WD_13_ct  WD_2_compass_degrees WD_2_compass_point  WD_2_compass_right  WD_2_compass_up  WD_2_ct  WD_3_compass_degrees WD_3_compass_point  WD_3_compass_right  WD_3_compass_up  WD_3_ct  WD_5_compass_degrees WD_5_compass_point  WD_5_compass_right  WD_5_compass_up  WD_5_ct  WD_6_compass_degrees WD_6_compass_point  WD_6_compass_right  WD_6_compass_up  WD_6_ct  WD_7_compass_degrees WD_7_compass_point  WD_7_compass_right  WD_7_compass_up  WD_7_ct  WD_8_compass_degrees WD_8_compass_point  WD_8_compass_right  WD_8_compass_up  WD_8_ct  WD_9_compass_degrees WD_9_compass_point  WD_9_compass_right  WD_9_compass_up  WD_9_ct  WD_most_common_compass_degrees WD_most_common_compass_point  WD_most_common_compass_right  WD_most_common_compass_up  WD_most_common_ct
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327
-69.684  342720 -103.886 -26.371  2019-10-01T11:46:39Z    4.63  158626   0.129  17.919  2019-10-02T12:26:13Z  727.941  153492  711.7187  743.1005  spring                  22.5                NNE            0.382683          0.92388        4                  225.0                  SW            -0.707107         -0.707107     26723                  247.5                 WSW             -0.92388         -0.382683     15528                  270.0                   W                 -1.0              -0.0      3136                  292.5                 WNW             -0.92388          0.382683         2                  45.0                 NE            0.707107         0.707107        6                  67.5                ENE             0.92388         0.382683      688                 112.5                ESE             0.92388        -0.382683     3387                 135.0                 SE            0.707107        -0.707107    40327                 157.5                SSE            0.382683         -0.92388    31608                 180.0                  S                 0.0             -1.0     8520                 202.5                SSW           -0.382683         -0.92388    28697                           135.0                           SE                      0.707107                  -0.707107              40327