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Read specific columns from a csv file with csv module?
...t(list) # each value in each column is appended to a list
with open('file.txt') as f:
reader = csv.DictReader(f) # read rows into a dictionary format
for row in reader: # read a row as {column1: value1, column2: value2,...}
for (k,v) in row.items(): # go over each column name and va...
Getting “Lock wait timeout exceeded; try restarting transaction” even though I'm not using a transac
...the output to a file? I tried SHOW ENGINE INNODB STATUS\G > innodb_stat.txt but doesn't work.
– yantaq
Feb 18 '15 at 20:32
14
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How do I escape spaces in path for scp copy in Linux?
...fficient, but I solved it using the "?" char instead:
for the file "tasks.txt Jun-22.bkp" I downloaded it using "tasks.txt?Jun-22.bkp"
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Given two directory trees, how can I find out which files differ by content?
...reference --new-file --no-ignore-file-name-case /dir1 /dir2 > dirdiff_1.txt
rsync --recursive --delete --links --checksum --verbose --dry-run /dir1/ /dir2/ > dirdiff_2.txt
The choice between them depends on the location of dir1 and dir2:
When the directories reside on two seperate drives, ...
What does the git index contain EXACTLY?
...ing tree.
To see more, cf. "git/git/Documentation/technical/index-format.txt":
The Git index file has the following format
All binary numbers are in network byte order.
Version 2 is described here unless stated otherwise.
A 12-byte header consisting of:
4-byte signature:
The signature is { 'D'...
Add support library to Android Studio project
...d false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:support-v4:21.+'
}
NOTES: Use + in compile 'com.android.supp...
Locking a file in Python
...e following fashion:
from filelock import FileLock
with FileLock("myfile.txt.lock"):
print("Lock acquired.")
with open("myfile.txt"):
# work with the file as it is now locked
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How to force file download with PHP
... "gif" => "image/gif",
"pdf" => "application/pdf",
"txt" => "text/plain",
"html"=> "text/html",
"png" => "image/png",
"jpeg"=> "image/jpg"
);
if($mime_type==''){
$file_extension = strtolower(substr(strrchr($file,"."),1));
...
How do I view the SQL generated by the Entity Framework?
...>
<parameters>
<parameter value="C:\Temp\LogOutput.txt"/>
<parameter value="true" type="System.Boolean"/>
</parameters>
</interceptor>
</interceptors>
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How to do Base64 encoding in node.js?
...ecipher = crypto.createDecipheriv('des-ede3-cbc', encryption_key, iv);
var txt = decipher.update(ciph, 'base64', 'utf8');
txt += decipher.final('utf8');
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