Edit: Thanks Ron for the heads-up in the comment section. If we set the as_index parameter of the groupby function as False, the group names will not be used as the index.
The pct_change is used to calculate the percent change through the values in a series. It is useful when calculating the percentage of change in a time series or sequential array of elements.
If we log too little, we may not be able to capture adequate information to build the context of each important event. If we log too much, it will end up with performance issues. (Writing a huge log file results in higher I/O and disk storage consumptions. If the file system does not support it, it will degrade the overall performance of the system.)
Instead of logging full descriptions all the time, try to introduce a reference ID or simplified template to represent lengthy descriptions that are appearing repeatedly in your log. This reduces the overall log messages count and length while providing the flexibility to keep selected information hidden. For instance, without publishing vulnerabilities in detailed text format to a log file, it is always safe to use a code name or common reference ID to represent them so that only the domain experts will understand the actual scenario.
We can achieve this by using the Style property which returns a styler object It provides many options for formatting and displaying dataframes. For instance, we can highlight the minimum or maximum values.
Some tools and terminal consoles do not support printing and storing log messages with certain Unicode characters. Hence localization and other advanced features may be challenging at the logging level. Therefore, make sure you stick to the English language and always use a widely accepted character set for writing log messages.
Regardless of the complexity and depth of each log level implementation, we must properly set them in our code to provide the optimum level of information based on each scenario. For instance, all information used by developers for debugging and tech analysis purposes must go under DEBUG or TRACE levels, while system-level banners can go under INFO level.
It’s apparent the reason Bezos towers above all his competitors is for the very same reason Babe Ruth once towered over the plate. Whereas baseball players before Ruth embraced Ty Cobb’s model of merely swinging for base hits, not Ruth! “Never let the fear of striking out get in your way,” said Ruth, while swinging for the fences.
By default, categorical data is stored with the object data type. However, it may cause unnecessary memory usage especially when the categorical variable has low cardinality.
I do not want to go into detail about plotting since pandas is not a data visualization library. However, the plot function is capable of creating many different plots such as line, bar, kde, area, scatter, and so on.
According to Business Insider’s Eugene Kim’s report, Bezos “says nine times out of ten, you’re going to fail. But every once in a while, you’ll hit a home run that in business terms is more like 1,000 runs. ‘Given a ten percent chance of a 100 times payoff, you should take that bet every time,’ Bezos says.”
To optimize log messages, develop a thorough understanding of the functional and non-functional expectations of the system and plan for the right quality and quantity of log messages. Make every log message meaningful and related to the context — be short and sweet always.
In some cases, we need to reset the index and get rid of the original index at the same time. Consider a case where draw a sample from a dataframe. The sample will keep the index of the original dataframe so we want to reset it.
2020-11-11 13:52:18 DEBUG App:36 - Loading adapters.. 2020-11-11 13:52:21 DEBUG Adapters:10 - Loading adapter docs/v1 2020-11-11 13:52:22 DEBUG Adapters:16 - Loading adapter mongo/v1 2020-11-11 13:52:26 DEBUG Docs:38 - docs adapter initialized 2020-11-11 13:52:27 DEBUG Mongo:38 - mongo adapter initialized 2020-11-11 13:52:22 DEBUG Adapters:20 - Successfully loaded all
- As the first anniversary of bloody communal riots that convulsed the Indian capital approaches, Muslim victims are still shaken and struggling
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