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How to estimate how much memory a Pandas' DataFrame will need?

I have been wondering... If I am reading, say, a 400MB csv file into a pandas dataframe (using read_csv or read_table), is there any way to guesstimate how much memory this will need? Just trying to get a better feel of data frames and memory... ...
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How can I get an http response body as a string in Java?

...g/httpclient-legacy/apidocs/org/apache/commons/httpclient/HttpMethod.html and an example here: 12 Answers ...
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How can I force gradle to redownload dependencies?

... Generally, you can refresh dependencies in your cache with the command line option --refresh-dependencies. You can also delete the cached files under ~/.gradle/caches. With the next build Gradle would attempt to download them again. What is your specific use case? Do you use dynamic depende...
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How can I ask the Selenium-WebDriver to wait for few seconds in Java?

... Well, there are two types of wait: explicit and implicit wait. The idea of explicit wait is WebDriverWait.until(condition-that-finds-the-element); The concept of implicit wait is driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS); You can get diff...
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Best way to list files in Java, sorted by Date Modified?

...h that the oldest files are first. My solution was to call File.listFiles and just resort the list based on File.lastModified, but I was wondering if there was a better way. ...
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Django using get_user_model vs settings.AUTH_USER_MODEL

... into the app cache. It might work in your specific setup, but it is a hit-and-miss scenario. If you change some settings (e.g. the order of INSTALLED_APPS) it might very well break the import and you will have to spend additional time debugging. settings.AUTH_USER_MODEL will pass a string as the f...
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How do I check for nulls in an '==' operator overload without infinite recursion?

... And what does foo1.Equals(foo2) means if, for example, I want foo1 == foo2 only if foo1.x == foo2.x && foo1.y == foo2.y? Isn't this answering ignoring the case where foo1 != null but foo2 == null? ...
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HTTP error 403 in Python 3 Web Scraping

... This works but I feel like they must have a good reason to block bots and I'm violating their terms of service – xjcl Oct 11 '19 at 7:19 add a comment  ...
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How to vertical align an inline-block in a line of text?

I want to create an inline-block that will take on some unknown width and height. (It'll have a table inside it with content dynamically generated). Further, the inline-block should be placed inside a line of text, such as "my text (BLOCK HERE)". To make it look pretty, I'm trying to make the blo...
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Accessing outside variable using anonymous function as params

Basically I use this handy function to processing db rows (close an eye on PDO and/or other stuff) 2 Answers ...