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Add initial version of chapter 10

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Alexander Hess 2020-04-16 05:35:23 +02:00
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02_functions_00_content.ipynb
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@ -1012,7 +1012,7 @@
"source": [
"Its value may seem awkward at first: It consists of a location showing where the function is defined (i.e., `__main__` here, which is Python's way of saying \"in this notebook\") and the signature wrapped inside angle brackets `<` and `>`.\n",
" \n",
"The angle brackets are a convention to indicate that the value may *not* be used as a *literal* (i.e., typed back into another code cell). Chapter 10 introduces the concept of a **text representation** of an object, which is related to the *semantic* meaning of an object's value as discussed in [Chapter 1 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/01_elements_00_content.ipynb#Value-/-\"Meaning\"), and the angle brackets convention is one such way to represent an object as text. When executed, the angle brackets cause a `SyntaxError` because Python expects the `<` operator to come with an operand on both sides (cf., [Chapter 3 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/03_conditionals_00_content.ipynb#Relational-Operators))."
"The angle brackets are a convention to indicate that the value may *not* be used as a *literal* (i.e., typed back into another code cell). [Chapter 10 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/10_classes_00_content.ipynb) introduces the concept of a **text representation** of an object, which is related to the *semantic* meaning of an object's value as discussed in [Chapter 1 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/01_elements_00_content.ipynb#Value-/-\"Meaning\"), and the angle brackets convention is one such way to represent an object as text. When executed, the angle brackets cause a `SyntaxError` because Python expects the `<` operator to come with an operand on both sides (cf., [Chapter 3 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/03_conditionals_00_content.ipynb#Relational-Operators))."
]
},
{
@ -3599,7 +3599,7 @@
}
},
"source": [
"Besides the usual dunder-style attributes, the built-in [dir() <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_py.png\">](https://docs.python.org/3/library/functions.html#dir) function lists some attributes in an upper case naming convention and many others starting with a *single* underscore `_`. To understand the former, we must wait until Chapter 10, while the latter is explained further below."
"Besides the usual dunder-style attributes, the built-in [dir() <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_py.png\">](https://docs.python.org/3/library/functions.html#dir) function lists some attributes in an upper case naming convention and many others starting with a *single* underscore `_`. To understand the former, we must wait until [Chapter 10 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/10_classes_00_content.ipynb), while the latter is explained further below."
]
},
{
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}
},
"source": [
"Packages are a generalization of modules, and we look at one in detail in Chapter 10. You may, however, already look at a [sample package <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_gh.png\">](https://github.com/webartifex/intro-to-python/tree/master/sample_package) in the repository, which is nothing but a folder with *.py* files in it.\n",
"Packages are a generalization of modules, and we look at one in detail in [Chapter 10 <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/10_classes_00_content.ipynb). You may, however, already look at a [sample package <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_gh.png\">](https://github.com/webartifex/intro-to-python/tree/master/sample_package) in the repository, which is nothing but a folder with *.py* files in it.\n",
"\n",
"As a further reading on modules and packages, we refer to the [official tutorial <img height=\"12\" style=\"display: inline-block\" src=\"static/link_to_py.png\">](https://docs.python.org/3/tutorial/modules.html)."
]