5 ms·

Notes from MPUG: "Python one-liners" talk

33 points by moreati 13y ago

arocks 13y ago
A lot more examples are in the Python wiki: http://wiki.python.org/moin/Powerful%20Python%20One-Liners http://wiki.python.org/moin/Powerful%20Python%20One-Liners
msluyter 13y ago
A nice list. I use things like the simple web server all the time, and I was unaware of the SMTP server, but some of these seem superflous, like: python -m calendar When you could just do cal 2013 (with fewer keystrokes). Is there some advantage to using the python version of the above?
- smortaz 13y ago
  'cal' is not recognized as an internal or external command, operable program or batch file :).
- densh 13y ago
  I liked SimpleHTTPServer so much that I've implemented equivalent of it in Go: https://bitbucket.org/densh/static-go https://bitbucket.org/densh/static-go
- aleyan 13y ago
  Doesn't quite work as expected. From "python -m calendar 1752 9" I get: September 1752 Mo Tu We Th Fr Sa Su 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 "cal 9 1752" on the other hand gives: September 1752 S M Tu W Th F S 1 2 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Maybe python doesn't auto recognize the timezone? EDIT: Actually this is pretty bad because python gets all the days of the week before September 1752 in North America wrong.
  - msluyter 13y ago
    Interesting calendar trivia. The Gregorian calendar was adopted in Sept. 1752: Britain and the British Empire (including the eastern part of what is now the United States) adopted the Gregorian calendar in 1752, by which time it was necessary to correct by 11 days. Wednesday, 2 September 1752 was followed by Thursday, 14 September 1752. So, in this case, it looks like cal is doing the right thing.
  - dragonwriter 13y ago
    The python version is using proleptic Gregorian and the cal version is using the historical calendar rules for a particular locale. Which is "right" depends on what you want.
- ssorc 13y ago
  cal works on most Unix systems, but is not part of Windows (is there a Powershell equivalent?) If you don't have cygwin (or similar) installed, these types of one-liners have saved me a number of times for quick hacks on Windows systems.

33 points by moreati 13y ago

A lot more examples are in the Python wiki: http://wiki.python.org/moin/Powerful%20Python%20One-Liners http://wiki.python.org/moin/Powerful%20Python%20One-Liners

msluyter 13y ago

A nice list. I use things like the simple web server all the time, and I was unaware of the SMTP server, but some of these seem superflous, like: python -m calendar When you could just do cal 2013 (with fewer keystrokes). Is there some advantage to using the python version of the above?

smortaz 13y ago
'cal' is not recognized as an internal or external command, operable program or batch file :).
densh 13y ago
I liked SimpleHTTPServer so much that I've implemented equivalent of it in Go: https://bitbucket.org/densh/static-go https://bitbucket.org/densh/static-go
aleyan 13y ago
Doesn't quite work as expected. From "python -m calendar 1752 9" I get: September 1752 Mo Tu We Th Fr Sa Su 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 "cal 9 1752" on the other hand gives: September 1752 S M Tu W Th F S 1 2 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Maybe python doesn't auto recognize the timezone? EDIT: Actually this is pretty bad because python gets all the days of the week before September 1752 in North America wrong.
- msluyter 13y ago
  Interesting calendar trivia. The Gregorian calendar was adopted in Sept. 1752: Britain and the British Empire (including the eastern part of what is now the United States) adopted the Gregorian calendar in 1752, by which time it was necessary to correct by 11 days. Wednesday, 2 September 1752 was followed by Thursday, 14 September 1752. So, in this case, it looks like cal is doing the right thing.
- dragonwriter 13y ago
  The python version is using proleptic Gregorian and the cal version is using the historical calendar rules for a particular locale. Which is "right" depends on what you want.
ssorc 13y ago
cal works on most Unix systems, but is not part of Windows (is there a Powershell equivalent?) If you don't have cygwin (or similar) installed, these types of one-liners have saved me a number of times for quick hacks on Windows systems.