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Reading specific lines only
I'm using a for loop to read a file, but I only want to read specific lines, say line #26 and #30. Is there any built-in feature to achieve this?
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Reading and writing environment variables in Python? [duplicate]
...the environment variables aren't available from the shell. only python can read the environment variables set this way.
– openCivilisation
Mar 16 '19 at 9:47
add a comment
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How do you append to a file in Python?
...ays be at the end of the file (an append). You can open with "a+" to allow reading, seek backwards and read (but all writes will still be at the end of the file!).
Example:
>>> with open('test1','wb') as f:
f.write('test')
>>> with open('test1','ab') as f:
f.write...
Reloading/refreshing Kendo Grid
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You can use
$('#GridName').data('kendoGrid').dataSource.read(); <!-- first reload data source -->
$('#GridName').data('kendoGrid').refresh(); <!-- refresh current UI -->
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How do I redirect output to a variable in shell? [duplicate]
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TL;DR
To store "abc" into $foo:
echo "abc" | read foo
But, because pipes create forks, you have to use $foo before the pipe ends, so...
echo "abc" | ( read foo; date +"I received $foo on %D"; )
Sure, all these other answers show ways to not do what the OP asked, but ...
How to read an entire file to a string using C#?
What is the quickest way to read a text file into a string variable?
16 Answers
16
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Read/Write String from/to a File in Android
... Log.e("Exception", "File write failed: " + e.toString());
}
}
Read File:
private String readFromFile(Context context) {
String ret = "";
try {
InputStream inputStream = context.openFileInput("config.txt");
if ( inputStream != null ) {
InputStreamR...
In Clojure how can I convert a String to a number?
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Nice answer! This is better than using read-string in my opinion. I changed my answer to use your technique. I made a couple of small changes as well.
– Benjamin Atkin
Oct 9 '13 at 5:47
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What is the better API to Reading Excel sheets in java - JXL or Apache POI [closed]
Which of the 2 APIs is simpler to read/write/edit excel sheets ?
Do these APIs not support CSV extensions ?
4 Answers
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Get MD5 hash of big files in Python
...ct that MD5 has 128-byte digest blocks (8192 is 128×64). Since you're not reading the entire file into memory, this won't use much more than 8192 bytes of memory.
In Python 3.8+ you can do
import hashlib
with open("your_filename.txt", "rb") as f:
file_hash = hashlib.md5()
while chunk := f...