Python—缩短请求API所需的时间

我使用以下代码从API调用不同的方法：

import requests
import json
from unidecode import unidecode
from datetime import datetime

temp_county = 'County'
temp_locality = 'Locality'

# Function - login

session = requests.Session()


def login():
    # Application header
    header = {
        'Content-Type': 'application/json',
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }

    # User's credentials
    body_login = {
        'username': 'user',
        'password': 'pass'
    }

    # Make the login request and return the token
    request_url = requests.post(
        'https://urgentcargus.azure-api.net/api/LoginUser', json=body_login, headers=header)

    # Parse the token and remove double quotes
    token = 'Bearer ' + request_url.text.strip('"')

    return token

# Get country code. Since it's a local product, the request will return only the code for RO


def countries():
    # Application header
    header = {
        'Authorization': login(),
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Make the request and return the country code
    request_url = requests.get(
        'https://urgentcargus.azure-api.net/api/Countries', headers=header
    )

    countries_dictionary = request_url.json()

    for country in countries_dictionary:
        if country['Abbreviation'] == 'RO':
            countryId = str(country['CountryId'])

    return countryId


def counties():
    # Application header
    header = {
        'Authorization': login(),
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Load the country id
    params = {
        'countryId': countries()
    }

    # Make the request and return the county code based on the city
    request_url = requests.get(
        'https://urgentcargus.azure-api.net/api/Counties', params=params, headers=header
    )

    counties_dictionary = request_url.json()

    # Parse the city description and transliterate it to ASCII

    county = unidecode(temp_county)

   # print(county)

    # Return the county code
    for countyName in counties_dictionary:
        if countyName['Name'] == county:
            countyId = str(countyName['CountyId'])

    return countyId


def localities():
    # Application header
    header = {
        'Authorization': login(),
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Load the country id and county id
    params = {
        'countryId': countries(),
        'countyId': counties()
    }

    # Make the request and return the county code based on the city
    request_url = requests.get(
        'https://urgentcargus.azure-api.net/api/Localities', params=params, headers=header, stream=True
    )

    localities_dictionary = request_url.json()

    # Parse the city description and transliterate it to ASCII

    locality = unidecode(temp_locality)

    # print(county)

    # Return the locality code
    for localityName in localities_dictionary:
        if localityName['Name'] == locality:
            localityId = str(localityName['LocalityId'])

    return localityId


#
print(login())
print(countries())
print(counties())
print(localities())

这些函数运行良好，没有错误或其他问题。问题是（在我看来）它需要很多时间来完成所有功能并返回它必须返回的内容

为了节省时间，我使用了

requests.Session（）

来创建一个持久会话，但不知何故，这是相同的行为

我已经监控了需要多少时间，例如，大约需要5-6秒才能完成：

print('Process start! ' + str(datetime.now()))

# here are all the functions

print('Process ended! ' + str(datetime.now()))

终端响应：

Process start! 2019-10-18 13:26:09.796132
Bearer 8JCAOoSSevSpcNDydLHSAmZORL0RGgDXV110IUhxIRWABX0TNj
1
26
163
Process ended! 2019-10-18 13:26:14.663092

有什么办法可以改进吗

修改代码

# Function - login

session = requests.Session()

print('Process start! ' + str(datetime.now()))


def login():
    # Application header
    header = {
        'Content-Type': 'application/json',
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }

    # User's credentials
    body_login = {
        'username': 'user',
        'password': 'pass'
    }

    # Make the login request and return the token
    request_url = session.post(
        'https://urgentcargus.azure-api.net/api/LoginUser', json=body_login, headers=header)

    # Parse the token and remove double quotes
    temp_token = 'Bearer ' + request_url.text.strip('"')

    return temp_token


token = login()

# Get country code. Since it's a local product, the request will return only the code for RO


def countries():
    # Application header
    header = {
        'Authorization': token,
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Make the request and return the country code
    request_url = session.get(
        'https://urgentcargus.azure-api.net/api/Countries', headers=header
    )

    countries_dictionary = request_url.json()

    for country in countries_dictionary:
        if country['Abbreviation'] == 'RO':
            countryId = str(country['CountryId'])

    return countryId


def counties():
    # Application header
    header = {
        'Authorization': token,
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Load the country id
    params = {
        'countryId': countries()
    }

    # Make the request and return the county code based on the city
    request_url = session.get(
        'https://urgentcargus.azure-api.net/api/Counties', params=params, headers=header
    )

    counties_dictionary = request_url.json()

    # Parse the city description and transliterate it to ASCII

    county = unidecode(temp_county)

   # print(county)

    # Return the county code
    for countyName in counties_dictionary:
        if countyName['Name'] == county:
            countyId = str(countyName['CountyId'])

    return countyId


def localities():
    # Application header
    header = {
        'Authorization': token,
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Load the country id and county id
    params = {
        'countryId': countries(),
        'countyId': counties()
    }

    # Make the request and return the county code based on the city

    request_url = session.get(
        'https://urgentcargus.azure-api.net/api/Localities', params=params, headers=header
    )

    localities_dictionary = request_url.json()

    # Parse the city description and transliterate it to ASCII

    locality = unidecode(temp_locality)

    # print(county)

    # Return the locality code
    for localityName in localities_dictionary:
        if localityName['Name'] == locality:
            localityId = str(localityName['LocalityId'])

    return localityId

---

也许您可以使用items dict方法更改所有词典中的词典迭代次数

 for k , v in counties_dictionary.items():
        if k == 'Name':
            countyId = str(countyName['CountyId']) if v == locality else "Whatever you want"

---

您可以调用每个函数一次，并将输出作为其他函数的参数重用：

import requests
import json
from unidecode import unidecode
from datetime import datetime

temp_county = 'County'
temp_locality = 'Locality'

session = requests.Session()

def login():
    # Application header
    header = {
        'Content-Type': 'application/json',
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }

    # User's credentials
    body_login = {
        'username': 'user',
        'password': 'pass'
    }

    # Make the login request and return the token
    request_url = session.post(
        'https://urgentcargus.azure-api.net/api/LoginUser', json=body_login, headers=header)

    # Parse the token and remove double quotes
    temp_token = 'Bearer ' + request_url.text.strip('"')

    return temp_token

# Get country code. Since it's a local product, the request will return only the code for RO

def countries(token):
    # Application header
    header = {
        'Authorization': token,
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Make the request and return the country code
    request_url = session.get(
        'https://urgentcargus.azure-api.net/api/Countries', headers=header
    )

    countries_dictionary = request_url.json()

    for country in countries_dictionary:
        if country['Abbreviation'] == 'RO':
            countryId = str(country['CountryId'])

    return countryId


def counties(token, countryId):
    # Application header
    header = {
        'Authorization': token,
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Load the country id
    params = {
        'countryId': countryId
    }

    # Make the request and return the county code based on the city
    request_url = session.get(
        'https://urgentcargus.azure-api.net/api/Counties', params=params, headers=header
    )

    counties_dictionary = request_url.json()

    # Parse the city description and transliterate it to ASCII

    county = unidecode(temp_county)

   # print(county)

    # Return the county code
    for countyName in counties_dictionary:
        if countyName['Name'] == county:
            countyId = str(countyName['CountyId'])

    return countyId


def localities(token, countryId, countyId):
    # Application header
    header = {
        'Authorization': token,
        'Ocp-Apim-Subscription-Key': 'b4ed4ab7ebe84f0db79d42633771b741'
    }
    # Load the country id and county id
    params = {
        'countryId': countryId,
        'countyId': countyId
    }

    # Make the request and return the county code based on the city

    request_url = session.get(
        'https://urgentcargus.azure-api.net/api/Localities', params=params, headers=header
    )

    localities_dictionary = request_url.json()

    # Parse the city description and transliterate it to ASCII

    locality = unidecode(temp_locality)

    # print(county)

    # Return the locality code
    for localityName in localities_dictionary:
        if localityName['Name'] == locality:
            localityId = str(localityName['LocalityId'])

    return localityId

token = login()
countryId = countries(token)
countyId = counties(token, countryId)
localityId = localities(token, countryId, countyId)

---

可能吧？看起来您实际上并没有使用您创建的会话对象。使用

session.post（）

和

session.get（）

另外，您在每个函数中调用

login（）

。我对azure了解不多，但我相信你只需要登录一次。只需将令牌保存到一个变量中并重新使用它。@Mosheperez-它确实将时间缩短到最多3秒。但我知道会更好，对吗？@cdrrr你到底改变了什么？您是否尝试将令牌保存在变量中并重用它？如果你愿意的话，我相信进步会更大。你也可以尝试对

countries（）

和

countries（）

@Mosheperez（）的输出执行同样的操作。我已经编辑并粘贴了修改后的代码。它不是一个命令，而是一个列表。现在速度快多了，1-2秒，这当然取决于与服务器的通信，而服务器无法控制。谢谢