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Why do we need the “finally” clause in Python?
...
It makes a difference if you return early:
try:
run_code1()
except TypeError:
run_code2()
return None # The finally block is run before the method returns
finally:
other_code()
Compare to this:
try:
run_code1()
except TypeError:
run_code2()
return...
demystify Flask app.secret_key
If app.secret_key isn't set, Flask will not allow you to set or access the session dictionary.
2 Answers
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How to sort mongodb with pymongo
...rameters.
So if you want to sort by, let's say, id then you should .sort("_id", 1)
For multiple fields:
.sort([("field1", pymongo.ASCENDING), ("field2", pymongo.DESCENDING)])
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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
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Provide the :name option to add_index, e.g.:
add_index :studies,
["user_id", "university_id", "subject_name_id", "subject_type_id"],
:unique => true,
:name => 'my_index'
If using the :index option on references in a create_table block, it t...
How do I find an element that contains specific text in Selenium Webdriver (Python)?
...
Try the following:
driver.find_elements_by_xpath("//*[contains(text(), 'My Button')]")
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How to allow to accept only image files?
...e or not.
Check if image file is an actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
}
else {
echo "F...
How to get HTTP Response Code using Selenium WebDriver
...e(LogType.PERFORMANCE, Level.ALL);
cap.setCapability(CapabilityType.LOGGING_PREFS, logPrefs);
After the request is done, all you have to do is get and iterate the Perfomance logs and find "Network.responseReceived" for the requested url:
LogEntries logs = driver.manage().logs().get("performance")...
Using Java to find substring of a bigger string using Regular Expression
... specifically *?. You're going to probably want the following:
Pattern MY_PATTERN = Pattern.compile("\\[(.*?)\\]");
This will give you a pattern that will match your string and put the text within the square brackets in the first group. Have a look at the Pattern API Documentation for more info...
Rotating and spacing axis labels in ggplot2
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Change the last line to
q + theme(axis.text.x = element_text(angle = 90, vjust = 0.5, hjust=1))
By default, the axes are aligned at the center of the text, even when rotated. When you rotate +/- 90 degrees, you usually want it to be aligned at the edge instead:
The image ab...
C++ performance challenge: integer to std::string conversion
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#include <string>
const char digit_pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"808182...