51beiwanglu

标签：ast   入参   trace   返回值   rac   方法   通用   程序   使用方法   

添加功能：

• 保存功能
  • 用于查询，分析，回复数据
• 添加配置文件
  • 默认配置
    -用户自定义配置

#保存数据，纯文本，pkl
data = [{‘id‘:1, ‘time‘:‘1.2‘, ‘thing‘:‘买了一件毛衣‘}, {‘id‘:2, ‘time‘:‘1.6‘, ‘thing‘:‘find a bug‘}, {‘id‘:3, ‘time‘:‘1.3‘, ‘thing‘:‘write five lines of python‘}]
import os 
base_dir = r‘D:\python全站‘  #基准目录
data_path = os.path.join(base_dir, ‘data.db‘)  # 文件的目录，os.path.join()组合目录
with open(data_path, ‘w‘) as f:
    for db in data:
        print(db.values())
        line = ‘-‘.join(db.values())  # 出现下面错误，是因为字典的值的类型不一样，有int，有str，需要统一类型

dict_values([1, ‘1.2‘, ‘买了一件毛衣‘])

---------------------------------------------------------------------------

TypeError                                 Traceback (most recent call last)

<ipython-input-32-4092e5ac35cc> in <module>()
      9     for db in data:
     10         print(db.values())
---> 11         line = ‘-‘.join(db.values())
     12 

TypeError: sequence item 0: expected str instance, int found

# open?   # open的使用方法和参数，此次用到的是encoding=‘utf-8‘
# Signature: open(file, mode=‘r‘, buffering=-1, encoding=None, 
                errors=None, newline=None, 
                closefd=True, opener=None)

#保存数据，纯文本，pkl
data = [{‘id‘:1, ‘time‘:‘1.2‘, ‘thing‘:‘买了一件毛衣‘}, {‘id‘:2, ‘time‘:‘1.6‘, ‘thing‘:‘find a bug‘}, {‘id‘:3, ‘time‘:‘1.3‘, ‘thing‘:‘write five lines of python‘}]
import os 
base_dir = r‘D:\python全站‘
data_path = os.path.join(base_dir, ‘data.db‘)
with open(data_path, ‘w‘) as f:
    for db in data:
        print(db.values())
        line = ‘-‘.join([str(x) for x in db.values()])  # 列表推导式[x for x in 可迭代的数据结构]
        f.write(line)  # 将处理过的数据写入到文件f，data_path

dict_values([1, ‘1.2‘, ‘买了一件毛衣‘])
dict_values([2, ‘1.6‘, ‘find a bug‘])
dict_values([3, ‘1.3‘, ‘write five lines of python‘])

# 1-1.2-?ňá?????????2-1.6-find a bug3-1.3-write five lines of python  # 没有换行的操作：

#保存数据，纯文本，pkl
data = [{‘id‘:1, ‘time‘:‘1.2‘, ‘thing‘:‘买了一件毛衣‘}, {‘id‘:2, ‘time‘:‘1.6‘, ‘thing‘:‘find a bug‘}, {‘id‘:3, ‘time‘:‘1.3‘, ‘thing‘:‘write five lines of python‘}]

import os 
base_dir = r‘D:\python全站‘
data_path = os.path.join(base_dir, ‘data.db‘)
with open(data_path, ‘w‘) as f:
    for db in data:
        print(db.values())
        line = ‘-‘.join([str(x) for x in db.values()])  # 列表推导式
        f.write(line + ‘\n‘)   # 换行的操作 + ‘\n‘

dict_values([1, ‘1.2‘, ‘买了一件毛衣‘])
dict_values([2, ‘1.6‘, ‘find a bug‘])
dict_values([3, ‘1.3‘, ‘write five lines of python‘])

#保存数据，纯文本，pkl
data = [{‘id‘:1, ‘time‘:‘1.2‘, ‘thing‘:‘买了一件毛衣‘}, {‘id‘:2, ‘time‘:‘1.6‘, ‘thing‘:‘find a bug‘}, {‘id‘:3, ‘time‘:‘1.3‘, ‘thing‘:‘write five lines of python‘}]

import os 
base_dir = r‘D:\python全站‘
data_path = os.path.join(base_dir, ‘data.db‘)
with open(data_path, ‘w‘, encoding = ‘utf-8‘) as f:   # 写数据时候使用的编码是 utf-8,通用
    for db in data:
        print(db.values())
        line = ‘-‘.join([str(x) for x in db.values()])  # 列表推导式
        f.write(line + ‘\n‘)

dict_values([1, ‘1.2‘, ‘买了一件毛衣‘])
dict_values([2, ‘1.6‘, ‘find a bug‘])
dict_values([3, ‘1.3‘, ‘write five lines of python‘])

#保存数据，纯文本，pkl  封装
def save_dic(dic):
#     import os 
#     base_dir = r‘D:\python全站‘
#     data_path = os.path.join(base_dir, ‘data.db‘)
    with open(data_path, ‘w‘, encoding = ‘utf-8‘) as f:
        for db in data:
            print(db.values())
            line = ‘-‘.join([str(x) for x in db.values()])  # 列表推导式
            f.write(line + ‘\n‘)
    return ‘saved‘  # 思想：程序正确执行与否，都返回一个状态码。

save_dic(data_path)  # 调用函数，传入参数

dict_values([1, ‘1.2‘, ‘买了一件毛衣‘])
dict_values([2, ‘1.6‘, ‘find a bug‘])
dict_values([3, ‘1.3‘, ‘write five lines of python‘])

‘saved‘

#保存数据，纯文本，pkl  封装 + 异常判断  + 格式化返回值
def save_dic(dic):
    ‘保持数据到文件‘
    ret = {‘status‘:0, ‘statusText‘:‘saved‘}
    try:
        with open(data_path, ‘w‘, encoding = ‘utf-8‘) as f:
            for db in data:
#                 print(db.values())
                line = ‘-‘.join([x for x in db.values()])  # x没有转换
                f.write(line + ‘\n‘)
    except Exception as err:
#         print(err)
        ret[‘status‘] = 1
        ret[‘statusText‘] = err
    return ret

# save_dic(data)
save_dic(data_path)

{‘status‘: 1,
 ‘statusText‘: TypeError(‘sequence item 0: expected str instance, int found‘)}

#保存数据，纯文本，pkl  封装 + 异常判断  + 格式化返回值
def save_dic(dic):
    ‘保持数据到文件‘
    ret = {‘status‘:0, ‘statusText‘:‘saved‘}
    try:
        with open(data_path, ‘w‘, encoding = ‘utf-8‘) as f:
            for db in data:
#                 print(db.values())
                line = ‘-‘.join([str(x) for x in db.values()])  #
                f.write(line + ‘\n‘)
    except Exception as err:
#         print(err)
        ret[‘status‘] = 1
        ret[‘statusText‘] = err
    return ret

# save_dic(data)
save_dic(data_path)

{‘status‘: 0, ‘statusText‘: ‘saved‘}

import pickle
pkl_path = os.path.join(base_dir, ‘data.pkl‘)
with open(pkl_path, ‘wb‘) as f: # 如果没有这个文件的话，pickle会自动创建这个文件
    pickle.dump(data, f)

def save_to_pkl(dic):
    pkl_path = os.path.join(base_dir, ‘data.pkl2‘)
    with open(pkl_path, ‘wb‘) as f: # 使用wb模式，保存
        pickle.dump(dic, f)

save_to_pkl(data)

51beiwanglu

标签：ast   入参   trace   返回值   rac   方法   通用   程序   使用方法   

原文地址：http://blog.51cto.com/13118411/2140076