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Dictabase-4.0.9
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مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشترتوضیحات
A database interface that mimics a python dictionary.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | Dictabase-4.0.9 |
| نام | Dictabase |
| نسخه کتابخانه | 4.0.9 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Grant miller |
| ایمیل نویسنده | grant@grant-miller.com |
| آدرس صفحه اصلی | https://github.com/GrantGMiller/dictabase |
| آدرس اینترنتی | https://pypi.org/project/Dictabase/ |
| مجوز | PSF |
A database interface that acts like a python dictionary
Install
=======
pip install dictabase
Create a new table
------------------
::
# Create a table representing users
from dictabase import BaseTable, RegisterDBURI
RegisterDBURI() # pass nothing to default to sqlite
class UserClass(BaseTable):
pass
newUser = New(UserClass, name='Grant', age=31)
newUser = New(UserClass, name='Bob', age=99)
# there is now a sqlite database containing the 2 users. Yup, thats it!
Look up items in the database
-----------------------------
::
from dictabase import FindOne, FindAll
allUsers = FindAll(UserClass)
# allUsers is an iterable of all the UserClass objects that exists in the database
print('allUsers=', list(allUsers))
>> allUsers= [<UserClass: name='Grant', age=31>, <UserClass: name='Bob', age=99>]
user = FindOne(UserClass, name='Grant')
print('user=', user)
>>user= <UserClass: name='Grant', age=31>
user = FindOne(UserClass, name='NotARealName')
print('user=', user)
>>user= None
Read/Write to the database
--------------------------
::
# find an object that was previously put in the database
user = FindOne(UserClass, name='Grant')
# increment the age of the user by 1
user['age'] += 1
# Thats it! the database has now been updated with the new age
Drop a table
------------
::
from dictabase import Drop
Drop(UserClass, confirm=True)
# the table has been removed from the database
Delete a specific row in a table
--------------------------------
::
from dictabase import Delete
# find an object that was previously put in the database
user = FindOne(UserClass, name='Grant')
Delete(user)
# the user has been removed from the database
Advanced Usage
--------------
You can only store simple types like int, str, datetime in the database.
To store more complicated objects, like list, dict, or any arbitrary type, override the DumpKey() and LoadKey() method.
Using these methods, you can convert complex types into these more simple types.
::
from dictabase import (
BaseTable,
FindOne,
New,
RegisterDBURI,
Drop,
)
import json
RegisterDBURI()
class Page(BaseTable):
pass
Drop(Page, confirm=True) # clear the table for this test
class Book(BaseTable):
def DumpKey(self, key, value):
# this is called when putting info into the database
if key == 'pages':
ret = [page['id'] for page in value] # only store the page id as a json'd list of ints
return json.dumps(ret)
else:
return value
def LoadKey(self, key, value):
# this is called when extracting info from the database
if key == 'pages':
ret = json.loads(value)
ret = [FindOne(Page, id=ID) for ID in ret]
else:
return value
Drop(Book, confirm=True) # clear the table for this test
# Create a new book
book = New(Book)
book['pages'] = [] # this will hold our pages
print('book=', book)
>> book= <Book: id=1(type=int), pages=[](type=list)>
# Fill the book with pages
for i in range(10):
page = New(
Page,
words='These are words {}'.format(i),
parentBookID=book['id']
)
book['pages'].append(page)
print('book=', book)
>> book= <Book: id=1(type=int), pages=[<Page: words=These are words 0(type=str), parentBookID=1(type=int), id=1(type=int)>, <Page: words=These are words 1(type=str), parentBookID=1(type=int), id=2(type=int)>, <Page: words=These are words 2(type=str), parentBookID=1(type=int), id=3(type=int)>, <Page: words=These are words 3(type=str), parentBookID=1(type=int), id=4(type=int)>, <Page: words=These are words 4(type=str), parentBookID=1(type=int), id=5(type=int)>, <Page: words=These are words 5(type=str), parentBookID=1(type=int), id=6(type=int)>, <Page: words=These are words 6(type=str), parentBookID=1(type=int), id=7(type=int)>, <Page: words=These are words 7(type=str), parentBookID=1(type=int), id=8(type=int)>, <Page: words=These are words 8(type=str), parentBookID=1(type=int), id=9(type=int)>, <Page: words=These are words 9(type=str), parentBookID=1(type=int), id=10(type=int)>](type=list)>
# Look up the book/pages in the database
foundBook = FindOne(Book)
print('foundBook=', foundBook)
>> foundBook= <Book: id=1(type=int), pages=[<Page: words=These are words 0(type=str), parentBookID=1(type=int), id=1(type=int)>, <Page: words=These are words 1(type=str), parentBookID=1(type=int), id=2(type=int)>, <Page: words=These are words 2(type=str), parentBookID=1(type=int), id=3(type=int)>, <Page: words=These are words 3(type=str), parentBookID=1(type=int), id=4(type=int)>, <Page: words=These are words 4(type=str), parentBookID=1(type=int), id=5(type=int)>, <Page: words=These are words 5(type=str), parentBookID=1(type=int), id=6(type=int)>, <Page: words=These are words 6(type=str), parentBookID=1(type=int), id=7(type=int)>, <Page: words=These are words 7(type=str), parentBookID=1(type=int), id=8(type=int)>, <Page: words=These are words 8(type=str), parentBookID=1(type=int), id=9(type=int)>, <Page: words=These are words 9(type=str), parentBookID=1(type=int), id=10(type=int)>](type=list)>
for page in foundBook['pages']:
print('page=', page)
>> page= <Page: words=These are words 0(type=str), parentBookID=1(type=int), id=1(type=int)>
>> page= <Page: words=These are words 1(type=str), parentBookID=1(type=int), id=2(type=int)>
>> page= <Page: words=These are words 2(type=str), parentBookID=1(type=int), id=3(type=int)>
>> page= <Page: words=These are words 3(type=str), parentBookID=1(type=int), id=4(type=int)>
>> page= <Page: words=These are words 4(type=str), parentBookID=1(type=int), id=5(type=int)>
>> page= <Page: words=These are words 5(type=str), parentBookID=1(type=int), id=6(type=int)>
>> page= <Page: words=These are words 6(type=str), parentBookID=1(type=int), id=7(type=int)>
>> page= <Page: words=These are words 7(type=str), parentBookID=1(type=int), id=8(type=int)>
>> page= <Page: words=These are words 8(type=str), parentBookID=1(type=int), id=9(type=int)>
>> page= <Page: words=These are words 9(type=str), parentBookID=1(type=int), id=10(type=int)>
نیازمندی
| مقدار | نام |
|---|---|
| - | dataset |
نحوه نصب
نصب پکیج whl Dictabase-4.0.9:
pip install Dictabase-4.0.9.whl
نصب پکیج tar.gz Dictabase-4.0.9:
pip install Dictabase-4.0.9.tar.gz