python做簡單做web開發

 

 代碼地址：https://files.cnblogs.com/files/ceshixuexi/HeadFristPython.zip

一般以MVC模式開發

M：模型，存儲web應用的代碼

V：視圖，格式化和顯示web應用用戶界面的代碼

C：控制器，將web應用“粘合”在一起並提供業務邏輯的代碼

cgi-bin目錄下：

 

1、athletelist.py:

class AthleteList(list):

    def __init__(self, a_name, a_dob=None, a_times=[]):
        list.__init__([])
        self.name = a_name
        self.dob = a_dob
        self.extend(a_times)

    @staticmethod  # 靜態方法
    def sanitize(time_string):
        if '-' in time_string:
            splitter = '-'
        elif ':' in time_string:
            splitter = ':'
        else:
            return(time_string)
        (mins, secs) = time_string.split(splitter)
        return(mins + '.' + secs)

    @property # 這個修飾符可以將方法看做類屬性
    def top3(self):
        return(sorted(set([self.sanitize(t) for t in self]))[0:3])

 

2、athletemodel.py

import pickle

from athletelist import AthleteList

def get_coach_data(filename):
    try:
        with open(filename) as f:
            data = f.readline()
        templ = data.strip().split(',')
        return(AthleteList(templ.pop(0), templ.pop(0), templ))
    except IOError as ioerr:
        print('File error (get_coach_data): ' + str(ioerr))
        return(None)

def put_to_store(files_list):
    all_athletes = {}
    for each_file in files_list:
        ath = get_coach_data(each_file)
        all_athletes[ath.name] = ath
    try:
        with open('athletes.pickle', 'wb') as athf:
            pickle.dump(all_athletes, athf)
    except IOError as ioerr:
        print('File error (put_and_store): ' + str(ioerr))
    return(all_athletes)

def get_from_store():
    all_athletes = {}
    try:
        with open('athletes.pickle', 'rb') as athf:
            all_athletes = pickle.load(athf)
    except IOError as ioerr:
        print('File error (get_from_store): ' + str(ioerr))
    return(all_athletes)

 

3、generate_list.py

 

import glob
import athletemodel
import yate


data_files = glob.glob('data/*.txt')
athletes = athletemodel.put_to_store(data_files)

print(yate.start_response())
print(yate.include_header("Coach Kelly's List of Athletes"))
print(yate.start_form("generate_timing_data.py"))
print(yate.para('Select an athlete from the list to work with:'))
for each_athlete in athletes:
    print(yate.radio_button("which_athlete", athletes[each_athlete].name))
print(yate.end_form("Select"))
print(yate.include_footer({'Home': '/index.html'}))

 

 

4、yate.py

from string import Template
# 從標准庫string中導入Temlate類


def start_response(resp="text/html"):
    return('Content-type: ' + resp + '\n\n')
    # 這個函數需要一個可選的字符串作為參數，用它來創建一個CGI“content-type：”行，參數缺省值為“text/html”

def include_header(the_title):
    with open('templates/header.html') as headf:
        # 打開模板文件，讀入文件，換入所提供的標題
        head_text = headf.read()
    header = Template(head_text)
    return(header.substitute(title=the_title))
    # 這個函數需要一個字符串作為參數，用在html頁面最前面的標題中。頁面本身存儲在一個單獨的文件“templates/header.html”
    # 可以根據需要替換標題

def include_footer(the_links):
    with open('templates/footer.html') as footf:
        foot_text = footf.read()
    link_string = ''
    # 換入鏈接字典
    for key in the_links:
        # 將鏈接字典轉換為一個字符串，然后換入模板
        link_string += '<a href="' + the_links[key] + '">' + key + '</a>&nbsp;&nbsp;&nbsp;&nbsp;'
    footer = Template(foot_text)
    return(footer.substitute(links=link_string))
    # 與include_header函數一樣，這個函數使用一個字符串作為參數，來創建htm頁面的尾部
    # 頁面本身存儲在"template/footer"中，參數用於動態地創建一組html鏈接標記。從這些標記看，參數應該是一個字典

def start_form(the_url, form_type="POST"): # 這一般是post或者get
    return('<form action="' + the_url + '" method="' + form_type + '">')
    # 這個函數返回表單最前面的html，允許調用者指定url，還可以指定所要使用的方法

def end_form(submit_msg="Submit"):
    return('<p></p><input type=submit value="' + submit_msg + '"></form>')
    # 這個函數返回的表單末尾的html標記，同時還允許調用着制定表單“submit”按鈕的文本

def radio_button(rb_name, rb_value):
    return('<input type="radio" name="' + rb_name +
                             '" value="' + rb_value + '"> ' + rb_value + '<br />')
    # 給定一個單選按鈕名和值，創建一個html單選按鈕（通常包括在一個html表單中）。注意：2個參數都是必要的

def u_list(items):
    u_string = '<ul>'
    for item in items:
        # 一個簡單的for循環就可以達到目的
        u_string += '<li>' + item + '</li>'
    u_string += '</ul>'
    return(u_string)
    # 給定一個項列表，這個函數會把該列表轉換為一個html無序列表。一個簡單的for循環就可以達到目的

def header(header_text, header_level=2):
    return('<h' + str(header_level) + '>' + header_text +
           '</h' + str(header_level) + '>')
    # 創建並返回一個html標題標記(h1,h2,h3等)，默認為h2級標題。“header_text”參數是必要的

def para(para_text):
    return('<p>' + para_text + '</p>') 
    # 文本

 

 

5、generate_timing_data.py

#! /usr/local/bin/python3

import cgi

import cgitb
cgitb.enable()
#這兩行代碼啟用python的CGI跟蹤技術

import athletemodel
import yate





athletes = athletemodel.get_from_store()
# 從模型獲得數據

form_data = cgi.FieldStorage()
#所有表單數據，並放到一個字典中

athlete_name =form_data['which_athlete'].value
#從表單數據中訪問一個指定的數據

print(yate.start_response())
print(yate.include_header("Coach Kelly's Timing Data"))
print(yate.header("Athlete: " + athlete_name + ", DOB: " +
                      athletes[athlete_name].dob + "."))
print(yate.para("The top times for this athlete are:"))
print(yate.u_list(athletes[athlete_name].top3))
print(yate.include_footer({'Home':"/index.html",
                           "Select anthor athlete:":"generate_list.py"}))

 

http.py

from http.server import HTTPServer, CGIHTTPRequestHandler

port = 8002

httpd = HTTPServer(('', port), CGIHTTPRequestHandler)
print("Starting simple_httpd on port: " + str(httpd.server_port))
httpd.serve_forever()