How to detect less -R from python
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
0
I can use termcolor[1] to colorize the output from my command-line Python utility. However if piping to "less" or "more" or redirecting to a file the colors show up as an ugly soup of escape codes, basically unreadable.
To address this I can check sys.stdout.isatty() and only colorize if going directly to a terminal. However when piping to "less -R" I do want to colorized, because it can handle it.
Is there a way do use colors if writing to a real terminal or if pipeline to a command like "less -R" which can handle colors?
[1] - https://pypi.org/project/termcolor/
python terminal
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
|
show 1 more comment
0
I can use termcolor[1] to colorize the output from my command-line Python utility. However if piping to "less" or "more" or redirecting to a file the colors show up as an ugly soup of escape codes, basically unreadable.
To address this I can check sys.stdout.isatty() and only colorize if going directly to a terminal. However when piping to "less -R" I do want to colorized, because it can handle it.
Is there a way do use colors if writing to a real terminal or if pipeline to a command like "less -R" which can handle colors?
[1] - https://pypi.org/project/termcolor/
python terminal
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
A program doesn't know what happens to its output once it's written, all it can do is detect if stdout appears to be a tty or not. I suggest you give your Python script an option to manually override the result ofsys.stdout.isatty(), similar to whatlsdoes.
– PM 2Ring
Nov 23 '18 at 14:47
Yeah I have a "force colorized" flag and that works. Was hoping for something better. This seems like a real gap with pipe. Interestingly "head" can deal with non-colorized or colorized output. But "less" cannot, it requires "less -R" if the output is colorized. Seems like less is dumb here.
– Philip
Nov 23 '18 at 15:06
If there were a simple way to solve this issue, thenlswould be using it. It's not so much thatlessis dumb. It's just that by default it assumes you want to read binary data if you feed it binary data. ;)
– PM 2Ring
Nov 23 '18 at 15:16
Yeah that's too bad. It's pretty lame. If A is sending data to B without knowing what format B wants, it should either have a way to ask B, or it should send both formats and let B decide. Just dreaming here. Thanks for confirmation we as a species still have work to do. Ha.
– Philip
Nov 23 '18 at 15:55
I know very little about PowerShell, but I think they try to address this by piping objects between commands not text. Anyway good to confirm this is not possible with Linux so it doesn't keep me up at night.
– Philip
Nov 24 '18 at 2:39
|
show 1 more comment
0
0
0
0
I can use termcolor[1] to colorize the output from my command-line Python utility. However if piping to "less" or "more" or redirecting to a file the colors show up as an ugly soup of escape codes, basically unreadable.
To address this I can check sys.stdout.isatty() and only colorize if going directly to a terminal. However when piping to "less -R" I do want to colorized, because it can handle it.
Is there a way do use colors if writing to a real terminal or if pipeline to a command like "less -R" which can handle colors?
[1] - https://pypi.org/project/termcolor/
python terminal
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
I can use termcolor[1] to colorize the output from my command-line Python utility. However if piping to "less" or "more" or redirecting to a file the colors show up as an ugly soup of escape codes, basically unreadable.
To address this I can check sys.stdout.isatty() and only colorize if going directly to a terminal. However when piping to "less -R" I do want to colorized, because it can handle it.
Is there a way do use colors if writing to a real terminal or if pipeline to a command like "less -R" which can handle colors?
[1] - https://pypi.org/project/termcolor/
python terminal
python terminal
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
asked Nov 23 '18 at 14:40
PhilipPhilip
3761822
3761822
A program doesn't know what happens to its output once it's written, all it can do is detect if stdout appears to be a tty or not. I suggest you give your Python script an option to manually override the result ofsys.stdout.isatty(), similar to whatlsdoes.
– PM 2Ring
Nov 23 '18 at 14:47
Yeah I have a "force colorized" flag and that works. Was hoping for something better. This seems like a real gap with pipe. Interestingly "head" can deal with non-colorized or colorized output. But "less" cannot, it requires "less -R" if the output is colorized. Seems like less is dumb here.
– Philip
Nov 23 '18 at 15:06
If there were a simple way to solve this issue, thenlswould be using it. It's not so much thatlessis dumb. It's just that by default it assumes you want to read binary data if you feed it binary data. ;)
– PM 2Ring
Nov 23 '18 at 15:16
Yeah that's too bad. It's pretty lame. If A is sending data to B without knowing what format B wants, it should either have a way to ask B, or it should send both formats and let B decide. Just dreaming here. Thanks for confirmation we as a species still have work to do. Ha.
– Philip
Nov 23 '18 at 15:55
I know very little about PowerShell, but I think they try to address this by piping objects between commands not text. Anyway good to confirm this is not possible with Linux so it doesn't keep me up at night.
– Philip
Nov 24 '18 at 2:39
|
show 1 more comment
A program doesn't know what happens to its output once it's written, all it can do is detect if stdout appears to be a tty or not. I suggest you give your Python script an option to manually override the result ofsys.stdout.isatty(), similar to whatlsdoes.
– PM 2Ring
Nov 23 '18 at 14:47
Yeah I have a "force colorized" flag and that works. Was hoping for something better. This seems like a real gap with pipe. Interestingly "head" can deal with non-colorized or colorized output. But "less" cannot, it requires "less -R" if the output is colorized. Seems like less is dumb here.
– Philip
Nov 23 '18 at 15:06
If there were a simple way to solve this issue, thenlswould be using it. It's not so much thatlessis dumb. It's just that by default it assumes you want to read binary data if you feed it binary data. ;)
– PM 2Ring
Nov 23 '18 at 15:16
Yeah that's too bad. It's pretty lame. If A is sending data to B without knowing what format B wants, it should either have a way to ask B, or it should send both formats and let B decide. Just dreaming here. Thanks for confirmation we as a species still have work to do. Ha.
– Philip
Nov 23 '18 at 15:55
I know very little about PowerShell, but I think they try to address this by piping objects between commands not text. Anyway good to confirm this is not possible with Linux so it doesn't keep me up at night.
– Philip
Nov 24 '18 at 2:39
A program doesn't know what happens to its output once it's written, all it can do is detect if stdout appears to be a tty or not. I suggest you give your Python script an option to manually override the result of
sys.stdout.isatty(), similar to what ls does.– PM 2Ring
Nov 23 '18 at 14:47
A program doesn't know what happens to its output once it's written, all it can do is detect if stdout appears to be a tty or not. I suggest you give your Python script an option to manually override the result of
sys.stdout.isatty(), similar to what ls does.– PM 2Ring
Nov 23 '18 at 14:47
Yeah I have a "force colorized" flag and that works. Was hoping for something better. This seems like a real gap with pipe. Interestingly "head" can deal with non-colorized or colorized output. But "less" cannot, it requires "less -R" if the output is colorized. Seems like less is dumb here.
– Philip
Nov 23 '18 at 15:06
Yeah I have a "force colorized" flag and that works. Was hoping for something better. This seems like a real gap with pipe. Interestingly "head" can deal with non-colorized or colorized output. But "less" cannot, it requires "less -R" if the output is colorized. Seems like less is dumb here.
– Philip
Nov 23 '18 at 15:06
If there were a simple way to solve this issue, then
ls would be using it. It's not so much that less is dumb. It's just that by default it assumes you want to read binary data if you feed it binary data. ;)– PM 2Ring
Nov 23 '18 at 15:16
If there were a simple way to solve this issue, then
ls would be using it. It's not so much that less is dumb. It's just that by default it assumes you want to read binary data if you feed it binary data. ;)– PM 2Ring
Nov 23 '18 at 15:16
Yeah that's too bad. It's pretty lame. If A is sending data to B without knowing what format B wants, it should either have a way to ask B, or it should send both formats and let B decide. Just dreaming here. Thanks for confirmation we as a species still have work to do. Ha.
– Philip
Nov 23 '18 at 15:55
Yeah that's too bad. It's pretty lame. If A is sending data to B without knowing what format B wants, it should either have a way to ask B, or it should send both formats and let B decide. Just dreaming here. Thanks for confirmation we as a species still have work to do. Ha.
– Philip
Nov 23 '18 at 15:55
I know very little about PowerShell, but I think they try to address this by piping objects between commands not text. Anyway good to confirm this is not possible with Linux so it doesn't keep me up at night.
– Philip
Nov 24 '18 at 2:39
I know very little about PowerShell, but I think they try to address this by piping objects between commands not text. Anyway good to confirm this is not possible with Linux so it doesn't keep me up at night.
– Philip
Nov 24 '18 at 2:39
|
show 1 more comment
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53448705%2fhow-to-detect-less-r-from-python%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53448705%2fhow-to-detect-less-r-from-python%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
A program doesn't know what happens to its output once it's written, all it can do is detect if stdout appears to be a tty or not. I suggest you give your Python script an option to manually override the result of
sys.stdout.isatty(), similar to whatlsdoes.– PM 2Ring
Nov 23 '18 at 14:47
Yeah I have a "force colorized" flag and that works. Was hoping for something better. This seems like a real gap with pipe. Interestingly "head" can deal with non-colorized or colorized output. But "less" cannot, it requires "less -R" if the output is colorized. Seems like less is dumb here.
– Philip
Nov 23 '18 at 15:06
If there were a simple way to solve this issue, then
lswould be using it. It's not so much thatlessis dumb. It's just that by default it assumes you want to read binary data if you feed it binary data. ;)– PM 2Ring
Nov 23 '18 at 15:16
Yeah that's too bad. It's pretty lame. If A is sending data to B without knowing what format B wants, it should either have a way to ask B, or it should send both formats and let B decide. Just dreaming here. Thanks for confirmation we as a species still have work to do. Ha.
– Philip
Nov 23 '18 at 15:55
I know very little about PowerShell, but I think they try to address this by piping objects between commands not text. Anyway good to confirm this is not possible with Linux so it doesn't keep me up at night.
– Philip
Nov 24 '18 at 2:39