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Multiple linear regression in Python
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This returns an error with certain inputs. Any other solutions available?
– Zach
Jul 19 '12 at 1:30
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How do I unload (reload) a Python module?
...or any object belonging to the module), then you'll get subtle and curious errors caused by the old code hanging around longer than you expected, and things like isinstance not working across different versions of the same code.
If you have one-way dependencies, you must also reload all modules that...
Filter dataframe rows if value in column is in a set list of values [duplicate]
...ant the values in 'STK_ID' to end with, e.g.
endstrings = ['01$', '02$', '05$']
We can join these strings with the regex 'or' character | and pass the string to str.contains to filter the DataFrame:
>>> rpt[rpt['STK_ID'].str.contains('|'.join(endstrings)]
... STK_ID ...
... '15590...
Case insensitive Query with Spring CrudRepository
...full when use 'upper(q.applicant)'. In Postgres it causes '.PSQLException: ERROR: function upper(bytea) does not exist' when q.applicant is null
– advortsov
Oct 17 '19 at 9:05
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detect key press in python?
...loop
try: # used try so that if user pressed other than the given key error will not be shown
if keyboard.is_pressed('q'): # if key 'q' is pressed
print('You Pressed A Key!')
break # finishing the loop
except:
break # if user pressed a key other t...
Postgres: clear entire database before re-creating / re-populating from bash script
...ade in "--clean" option. As it is this option looks useless. I'm getting "ERROR: cannot drop schema public because other objects depend on it" like 100% of time using it.
– user4674453
Nov 7 '17 at 15:13
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Regex to validate date format dd/mm/yyyy
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I suppose I found an error: 29/02/2100 does not exist (2100 is NOT a leap year), but is still accepted by the given pattern.
– KnorxThieus
Jul 17 '17 at 19:54
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How to prevent ifelse() from turning Date objects into numeric objects
...1:5], format: "2010-12-31" "2011-01-02" "2011-01-03" "2011-01-04" "2011-01-05"
dplyr::if_else
From dplyr 0.5.0 release notes:
[if_else] have stricter semantics that ifelse(): the true and false arguments must be the same type. This gives a less surprising return type, and preserves S3 vectors lik...
Why doesn't Java offer operator overloading?
...ng from C++ to Java, the obvious unanswered question is why didn't Java include operator overloading?
16 Answers
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How to sort an array by a date property
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the first eg syntax gives error on angular7 : The left-hand side of an arithmetic operation must be of type 'any', 'number', 'bigint' or an enum type
– SURENDRANATH S
Jan 2 at 13:05
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