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On most platforms, the interpreter is called by '''`python(1)`'''. Some platforms distribute with version suffixes that may or may not be optional. The `py(1)` launcher is also available. |
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| A hello world program looks like: | {{{ #!/usr/bin/env python print("Hello, world") }}} A program is more commonly structured like: |
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| #!/usr/bin/env python |
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| #!/usr/bin/env python2 | |
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| # or chmod 755 hello.py ./hello.py |
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| * [[Python/Pipx|pipx]] * [[Python/PyProject|pyproject.toml]] * [[Python/PyCompile|py_compile]] * [[Python/Six|six]] * [[Python/TimeIt|timeit]] * [[Python/TypeAnnotation|Type Annotation]] * [[Python/Unittest|unittest]] |
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| * [[Python/Unittest|unittest]] | |
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| * [[Python/MoinMoin|MoinMoin]] | * [[Encryption/Certbot|certbot]] * [[Python/Django|Django]] |
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| * [[Python/UWSGI|uWSGI]] | * [[Python/IPython|IPython]] * [[Python/MoinMoin|MoinMoin]] * [[Python/Uwsgi|uWSGI]] |
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| * [[Python/ContextManagers|Context managers]] * [[Python/DunderMethods|Dunder Methods]] |
* [[Python/Builtins|Built-ins]] * [[Python/ContextManager|Context managers]] * [[Python/DunderMethod|Dunder methods]] * [[Python/FStrings|F-strings]] * [[Python/Generator|Generators]] |
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| * [[Python/StringMethods|String methods]] | |
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| == Libraries == | == Standard Library Modules == |
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| * [[Python/Codecs|Codecs]] | * [[Python/Base64|base64]] * [[Python/CMath|cmath]] * [[Python/Codecs|codecs]] * [[Python/Collections|collections]] * [[Python/Collections/Abc|collections.abc]] * [[Python/ConfigParser|configparser]] * [[Python/ContextLib|contextlib]] * [[Python/Copy|copy]] * [[Python/Csv|csv]] * [[Python/DataClasses|dataclasses]] * [[Python/Datetime|datetime]] * [[Python/Datetime/Date|datetime.date]] * [[Python/Datetime/Datetime|datetime.datetime]] * [[Python/Datetime/Time|datetime.time]] * [[Python/Datetime/TimeDelta|datetime.timedelta]] * [[Python/Decimal|decimal]] * [[Python/DiffLib|difflib]] * [[Python/Email|email]] * [[Python/Email/ContentManager|email.contentmanager]] * [[Python/Email/Errors|email.errors]] * [[Python/Email/Message|email.message]] * [[Python/Email/Parser|email.parser]] * [[Python/Enum|enum]] * [[Python/FileCmp|filecmp]] * [[Python/Fractions|fractions]] * [[Python/FtpLib|ftplib]] * [[Python/FuncTools|functools]] * [[Python/GetPass|getpass]] * [[Python/Html|html]] * [[Python/Html/Parser|html.parser]] * [[Python/ImapLib|imaplib]] * [[Python/Inspect|inspect]] * [[Python/IO|io]] * [[Python/IterTools|itertools]] * [[Python/Json|json]] * [[Python/Math|math]] * [[Python/Operator|operator]] * [[Python/Os|os]] * [[Python/Os/Path|os.path]] * [[Python/PathLib|pathlib]] * [[Python/Pickle|pickle]] * [[Python/PopLib|poplib]] * [[Python/PPrint|pprint]] * [[Python/QuoPri|quopri]] * [[Python/Random|random]] * [[Python/Re|re]] * [[Python/ShUtil|shutil]] * [[Python/SmtpLib|smtplib]] * [[Python/Sqlite3|sqlite3]] * [[Python/Statistics|statistics]] * [[Python/Strings|strings]] * [[Python/Sys|sys]] * [[Python/TempFile|tempfile]] * [[Python/TkInter|tkinter]] * [[Python/TomlLib|tomllib]] * [[Python/Typing|typing]] * [[Python/UrlLib|urllib]] * [[Python/XmlDomMinidom|xml.dom.minidom]] * [[Python/XmlSax|xml.sax]] |
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| == Parsers == | == Third-Party Modules == |
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| === Configuration Files === * [[Python/ConfigParser|ConfigParser]] === HTML === * [[Python/HtmlParser|html.parser]] |
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=== PDF === |
* [[Python/Jinja|Jinja]] * [[Python/HuggingFace|Hugging Face]] * [[Python/LxmlEtree|lxml.etree]] * [[Python/Matplotlib|Matplotlib]] * [[Python/NumPy|NumPy]] * [[Python/Pandas|Pandas]] |
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=== XML === * [[Python/XmlSax|xml.sax]] * [[Python/XmlDomMinidom|xml.dom.minidom]] * [[Python/LxmlEtree|lxml.etree]] |
* [[Python/Pillow|Pillow]] * [[Python/Pygments|Pygments]] * [[Python/Requests|Requests]] * [[Python/SciPy|SciPy]] * [[SPSS/Python|SPSS' proprietary interface (spss, spssaux, spssdata, and SpssClient)]] * [[Stata/Python|Stata's proprietary interface (sfi)]] * [[Python/SqlAlchemy|SqlAlchemy]] * [[Python/XGBoost|XGBoost]] |
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| ---- == See also == [[https://docs.python.org/3/reference/index.html|The Python Language Reference]] [[https://docs.python.org/3/library/index.html|The Python Standard Library]], the standard library reference manual [[https://pymotw.com/3/|Python Module of the Week blog]] |
Python
The Python programming language is an interpreted, duck-typed language.
On most platforms, the interpreter is called by python(1). Some platforms distribute with version suffixes that may or may not be optional. The py(1) launcher is also available.
Contents
Example
print("Hello, world")A program is more commonly structured like:
def main():
print("Hello, world")
if __name__ == "__main__":
main()If using Python 2, the print command is instead a statement.
print "Hello, world"
To run the program, try:
python hello.py
Tool chain
Applications and Servers
Language
Standard Library Modules
Third-Party Modules
Creating Libraries
See also
The Python Standard Library, the standard library reference manual
Python Module of the Week blog