Python readlines() gives different length when I use different encoding
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
For the same test.txt file, I tried different methods to read it but got different result.
All three of the following gave me the result I want, for example, 1000.
with open('test.txt','r') as f:
print(len(f.readlines()))
and
with open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
and
with codecs.open('test.txt','r') as f:
print(len(f.readlines()))
I ran wc -l test.txt in the terminal and it also gave 1000.
But the following gave a different result, such as 1007.
with codecs.open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
Does that mean codecs handles encoding differently from io? Anyone knows the possible cause it? Thanks in advance.
python io codec
asked Nov 17 '18 at 0:56
cyeeecyeee
1
add a comment |
For the same test.txt file, I tried different methods to read it but got different result.
All three of the following gave me the result I want, for example, 1000.
with open('test.txt','r') as f:
print(len(f.readlines()))
and
with open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
and
with codecs.open('test.txt','r') as f:
print(len(f.readlines()))
I ran wc -l test.txt in the terminal and it also gave 1000.
But the following gave a different result, such as 1007.
with codecs.open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
Does that mean codecs handles encoding differently from io? Anyone knows the possible cause it? Thanks in advance.
python io codec
asked Nov 17 '18 at 0:56
cyeeecyeee
1
Without seeing the content oftest.txtit's anyone's guess; does this behavior happen on all files you try?
– l'L'l
Nov 17 '18 at 1:04
Have you compared the outputs off.readlines()to see what's in the "extra" lines?
– snakecharmerb
Nov 18 '18 at 10:08
add a comment |
For the same test.txt file, I tried different methods to read it but got different result.
All three of the following gave me the result I want, for example, 1000.
with open('test.txt','r') as f:
print(len(f.readlines()))
and
with open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
and
with codecs.open('test.txt','r') as f:
print(len(f.readlines()))
I ran wc -l test.txt in the terminal and it also gave 1000.
But the following gave a different result, such as 1007.
with codecs.open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
Does that mean codecs handles encoding differently from io? Anyone knows the possible cause it? Thanks in advance.
python io codec
asked Nov 17 '18 at 0:56
cyeeecyeee
1
For the same test.txt file, I tried different methods to read it but got different result.
All three of the following gave me the result I want, for example, 1000.
with open('test.txt','r') as f:
print(len(f.readlines()))
and
with open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
and
with codecs.open('test.txt','r') as f:
print(len(f.readlines()))
I ran wc -l test.txt in the terminal and it also gave 1000.
But the following gave a different result, such as 1007.
with codecs.open('test.txt','r',encoding='utf-8') as f:
print(len(f.readlines()))
Does that mean codecs handles encoding differently from io? Anyone knows the possible cause it? Thanks in advance.
python io codec
python io codec
asked Nov 17 '18 at 0:56
cyeeecyeee
1
asked Nov 17 '18 at 0:56
cyeeecyeee
1
asked Nov 17 '18 at 0:56
cyeeecyeee
1
asked Nov 17 '18 at 0:56
cyeeecyeee
1
asked Nov 17 '18 at 0:56
cyeeecyeee
1
1
Without seeing the content oftest.txtit's anyone's guess; does this behavior happen on all files you try?
– l'L'l
Nov 17 '18 at 1:04
Have you compared the outputs off.readlines()to see what's in the "extra" lines?
– snakecharmerb
Nov 18 '18 at 10:08
add a comment |
Without seeing the content oftest.txtit's anyone's guess; does this behavior happen on all files you try?
– l'L'l
Nov 17 '18 at 1:04
Have you compared the outputs off.readlines()to see what's in the "extra" lines?
– snakecharmerb
Nov 18 '18 at 10:08
Without seeing the content of
test.txt it's anyone's guess; does this behavior happen on all files you try?– l'L'l
Nov 17 '18 at 1:04
Without seeing the content of
test.txt it's anyone's guess; does this behavior happen on all files you try?– l'L'l
Nov 17 '18 at 1:04
Have you compared the outputs of
f.readlines() to see what's in the "extra" lines?– snakecharmerb
Nov 18 '18 at 10:08
Have you compared the outputs of
f.readlines() to see what's in the "extra" lines?– snakecharmerb
Nov 18 '18 at 10:08
add a 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
});
}
});
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%2f53347230%2fpython-readlines-gives-different-length-when-i-use-different-encoding%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
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.
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%2f53347230%2fpython-readlines-gives-different-length-when-i-use-different-encoding%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
Without seeing the content of
test.txtit's anyone's guess; does this behavior happen on all files you try?– l'L'l
Nov 17 '18 at 1:04
Have you compared the outputs of
f.readlines()to see what's in the "extra" lines?– snakecharmerb
Nov 18 '18 at 10:08