'添加了PyMySQL的参考代码'

Day36-40/code/contact/main.py

+import pymysql
+
+INSERT_CONTACTER = """
+insert into tb_contacter (conname, contel, conemail) 
+values (%s, %s, %s)
+"""
+DELETE_CONTACTER = """
+delete from tb_contacter where conid=%s
+"""
+UPDATE_CONTACTER = """
+update tb_contacter set conname=%s, contel=%s, conemail=%s 
+where conid=%s
+"""
+SELECT_CONTACTERS = """
+select conid as id, conname as name, contel as tel, conemail as email 
+from tb_contacter limit %s offset %s
+"""
+COUNT_CONTACTERS = """
+select count(conid) as total from tb_contacter
+"""
+
+
+def input_contacter_info():
+    name = input('姓名: ')
+    tel = input('手机: ')
+    email = input('邮箱: ')
+    return name, tel, email
+
+
+def add_new_contacter(con):
+    name, tel, email = input_contacter_info()
+    try:
+        with con.cursor() as cursor:
+            if cursor.execute(INSERT_CONTACTER,
+                              (name, tel, email)) == 1:
+                print('添加联系人成功!')
+    except pymysql.MySQLError as err:
+        print(err)
+        print('添加联系人失败!')
+
+
+def delete_contacter(con, contacter_id):
+    try:
+        with con.cursor() as cursor:
+            if cursor.execute(DELETE_CONTACTER, (contacter_id, )) == 1:
+                print('联系人已经删除!')
+    except pymysql.MySQLError as err:
+        print(err)
+        print('删除联系人失败!')
+
+
+def edit_contacter_info(con, contacter):
+    name, tel, email = input_contacter_info()
+    contacter['name'] = name or contacter['name']
+    contacter['tel'] = tel or contacter['tel']
+    contacter['email'] = email or contacter['email']
+    try:
+        with con.cursor() as cursor:
+            if cursor.execute(UPDATE_CONTACTER,
+                              (contacter['name'], contacter['tel'],
+                               contacter['email'], contacter['id'])) == 1:
+                print('联系人信息已经更新!')
+    except pymysql.MySQLError as err:
+        print(err)
+        print('更新联系人信息失败!')
+
+
+def show_contacter_detail(con, contacter):
+    print('姓名:', contacter['name'])
+    print('手机号:', contacter['tel'])
+    print('邮箱:', contacter['email'])
+    choice = input('是否编辑联系人信息?(yes|no)')
+    if choice == 'yes':
+        edit_contacter_info(con, contacter)
+    else:
+        choice = input('是否删除联系人信息?(yes|no)')
+        if choice == 'yes':
+            delete_contacter(con, contacter['id'])
+
+
+def find_all_contacters(con):
+    page, size = 1, 5
+    try:
+        with con.cursor() as cursor:
+            cursor.execute(COUNT_CONTACTERS)
+            total = cursor.fetchone()['total']
+            while True:
+                cursor.execute(SELECT_CONTACTERS,
+                               (size, (page - 1) * size))
+                contacters_list = []
+                for index, row in enumerate(cursor.fetchall()):
+                    contacters_list.append(row)
+                    print('[%d]: %s' % (index, row['name']))
+                choice = input('是否查看联系人详情?(yes|no)')
+                if choice.lower() == 'yes':
+                    index = int(input('请输入编号: '))
+                    if 0 <= index < cursor.rowcount:
+                        show_contacter_detail(con, contacters_list[index])
+                if page * size < total:
+                    choice = input('继续查看下一页?(yes|no)')
+                    if choice.lower() == 'yes':
+                        page += 1
+                    else:
+                        break
+                else:
+                    print('没有下一页记录啦!')
+                    break
+
+    except pymysql.MySQLError as err:
+        print(err)
+
+
+def find_contacters_by_name(con):
+    pass
+
+
+def find_contacters(con):
+    while True:
+        print('1. 查看所有联系人')
+        print('2. 搜索联系人')
+        print('3. 退出查找')
+        choice = int(input('请输入: '))
+        if choice == 1:
+            find_all_contacters(con)
+        elif choice == 2:
+            find_contacters_by_name(con)
+        elif choice == 3:
+            break
+
+
+def main():
+    con = pymysql.connect(host='10.7.185.126', port=3306,
+                          user='root', passwd='123456',
+                          db='contact', charset='utf8',
+                          autocommit=True,
+                          cursorclass=pymysql.cursors.DictCursor)
+    while True:
+        print('=====通讯录=====')
+        print('1. 新建联系人')
+        print('2. 查找联系人')
+        print('3. 退出系统')
+        print('===============')
+        choice = int(input('请选择: '))
+        if choice == 1:
+            add_new_contacter(con)
+        elif choice == 2:
+            find_contacters(con)
+        elif choice == 3:
+            con.close()
+            print('谢谢使用, 再见！')
+            break
+
+
+if __name__ == '__main__':
+    main()

Day36-40/code/contact/test01.py

+def main():
+    list1 = ['orange', 'grape', 'banana', 'waxberry', 'pitaya']
+    for index, val in enumerate(list1):
+        print('%d: %s' % (index, val))
+
+
+if __name__ == '__main__':
+    main()