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Commit0afd2b3

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feat: add shelve module
1 parent24b2fc6 commit0afd2b3

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‎docs/cheatsheet/reading-and-writing-files.md‎

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@@ -67,46 +67,3 @@ You can also iterate through the file line by line:
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# Hello world!
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# Bacon is not a vegetable.
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```
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##The shelve module
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<base-disclaimer>
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<base-disclaimer-title>
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From the <a target="_blank" href="https://docs.python.org/3/library/shelve.html">Python 3 documentation</a>
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</base-disclaimer-title>
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<base-disclaimer-content>
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A “shelf” is a persistent, dictionary-like object. The difference with “dbm” databases is that the values (not the keys!) in a shelf can be essentially arbitrary Python objects — anything that the pickle module can handle. This includes most class instances, recursive data types, and objects containing lots of shared sub-objects. The keys are ordinary strings.
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</base-disclaimer-content>
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</base-disclaimer>
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To save variables:
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```python
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>>>import shelve
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>>> cats= ['Zophie','Pooka','Simon']
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>>>with shelve.open('mydata')as shelf_file:
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... shelf_file['cats']= cats
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```
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To open and read variables:
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```python
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>>>with shelve.open('mydata')as shelf_file:
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...print(type(shelf_file))
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...print(shelf_file['cats'])
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...
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# <class 'shelve.DbfilenameShelf'>
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# ['Zophie', 'Pooka', 'Simon']
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```
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Just like dictionaries,`shelf` values have`keys()` and`values()` methods that will return list-like values of the keys and values in the shelf. Since these methods return list-like values instead of true lists, you should pass them to the`list()` function to get them in list form.
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```python
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>>>with shelve.open('mydata')as shelf_file:
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...print(list(shelf_file.keys()))
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...print(list(shelf_file.values()))
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...
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# ['cats']
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# [['Zophie', 'Pooka', 'Simon']]
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```

‎docs/modules/shelve-module.md‎

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---
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title:Python Shelve Module - Python Cheatsheet
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description:A “shelf” is a persistent, dictionary-like object. in a shelf can be essentially arbitrary Python objects — anything that the pickle module can handle.
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---
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#Python Shelve Module
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<base-disclaimer>
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<base-disclaimer-title>
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From the <a target="_blank" href="https://docs.python.org/3/library/shelve.html">Python 3 documentation</a>
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</base-disclaimer-title>
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<base-disclaimer-content>
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A “shelf” is a persistent, dictionary-like object. The difference with “dbm” databases is that the values (not the keys!) in a shelf can be essentially arbitrary Python objects — anything that the pickle module can handle. This includes most class instances, recursive data types, and objects containing lots of shared sub-objects. The keys are ordinary strings.
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</base-disclaimer-content>
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</base-disclaimer>
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##Save variables
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```python
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>>>import shelve
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>>> wife= ['Pretty','Lovely','Nice']
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>>>with shelve.open('mydata')as shelf_file:
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... shelf_file['wife']= wife
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```
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##Open and read variables:
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```python
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>>>with shelve.open('mydata')as shelf_file:
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...print(type(shelf_file))
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...print(shelf_file['wife'])
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...
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# <class 'shelve.DbfilenameShelf'>
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# ['Pretty', 'Lovely', 'Nice']
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```
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Just like dictionaries,`shelf` values have`keys()` and`values()` methods that will return list-like values of the keys and values in the shelf. Since these methods return list-like values instead of true lists, you should pass them to the`list()` function to get them in list form.
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```python
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>>>with shelve.open('mydata')as shelf_file:
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...print(list(shelf_file.keys()))
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...print(list(shelf_file.values()))
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...
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# ['wife']
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# [['Pretty', 'Lovely', 'Nice']]
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```

‎src/store/navigation.ts‎

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name:'Pathlib',
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path:'/modules/pathlib-module',
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},
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{
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name:'Shelve',
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path:'/modules/shelve-module',
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},
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{
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name:'Zipfile',
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path:'/modules/zipfile-module',

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