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How can I check if my python object is a number? [duplicate]
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Test if your variable is an instance of numbers.Number:
>>> import numbers
>>> import decimal
>>> [isinstance(x, numbers.Number) for x in (0, 0.0, 0j, decimal.Decimal(0))]
[True, True, True, True]
Thi...
ERROR: Error 1005: Can't create table (errno: 121)
...ly for you, and it brought me here. I quote:
You will get this message if you're trying to add a constraint with a
name that's already used somewhere else
To check constraints use the following SQL query:
SELECT
constraint_name,
table_name
FROM
information_schema.table_constrain...
“No such file or directory” error when executing a binary
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If anyone still got problems after installing the library mentioned above, try the following (it worked for me): sudo apt-get install libc6-i386 lib32stdc++6 lib32gcc1 lib32ncurses5 lib32z1
– ctitze
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How can I rotate an HTML 90 degrees?
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Getting the max value of an enum
... thinking this was really trival but an elegant solution was given. Also if you want to get the enum value use Convert.ToInt32() afterwards. This is for the google results.
– jdelator
Oct 15 '08 at 1:15
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Why does mongoose always add an s to the end of my collection name
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This is very crazy now which name do you use to query your collection espically when you have to do it from another interface ?
– Xsmael
Sep 1 '17 at 16:56
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SQLAlchemy - Getting a list of tables
...les:
>>> metadata.tables.keys()
['posts', 'comments', 'users']
If you're using the declarative extension, then you probably aren't managing the metadata yourself. Fortunately, the metadata is still present on the baseclass,
>>> Base = sqlalchemy.ext.declarative.declarative_ba...
What are the differences between type() and isinstance()?
...n versions do however offer extra goodies: isinstance (and issubclass) can now mean more than just "[an instance of] a derived class" (in particular, any class can be "registered" with an ABC so that it will show as a subclass, and its instances as instances of the ABC); and ABCs can also offer extr...
What is the difference between range and xrange functions in Python 2.X?
...f besides the anecdotal so far that it is faster) or what besides that is different about
28 Answers
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Unbound classpath container in Eclipse
...choose its path - something like "program files\Java\Jre#" -> "ok". And now you can select it from the list.
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