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Changes in import statement python3
...a single function. In Python 2 you were permitted to be semi-lazy:
def sin_degrees(x):
from math import *
return sin(degrees(x))
Note that it already triggers a warning in Python 2:
a.py:1: SyntaxWarning: import * only allowed at module level
def sin_degrees(x):
In modern Python 2 co...
Global access to Rake DSL methods is deprecated
...
Adding include Rake::DSL to the Rakefile before the applications load_tasks were called also worked for me.
So in the above user's case before the DemoApp::Application.load_tasks in the Rakefile.
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How to display all methods of an object?
...28459045
LN2: 0.6931471805599453
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tan: function tan() { [native code] }
__proto__: Object
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Will strlen be calculated multiple times if used in a loop condition?
...mstances include compiling with GCC under linux, where strlen is marked as __attribute__((pure)) allowing the compiler to elide multiple calls. GCC Attributes
– David Rodríguez - dribeas
Jul 6 '12 at 15:42
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get list from pandas dataframe column
...hon list. Alternatively you cast it with list(x).
import pandas as pd
data_dict = {'one': pd.Series([1, 2, 3], index=['a', 'b', 'c']),
'two': pd.Series([1, 2, 3, 4], index=['a', 'b', 'c', 'd'])}
df = pd.DataFrame(data_dict)
print(f"DataFrame:\n{df}\n")
print(f"column types:\n{df.dtyp...
javac is not recognized as an internal or external command, operable program or batch file [closed]
...amine PATH. Remove old Java paths.
Add the new Java path to PATH.
Edit JAVA_HOME.
Close and re-open console/IDE.
Welcome!
You have encountered one of the most notorious technical issues facing Java beginners: the 'xyz' is not recognized as an internal or external command... error message.
In a...
What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
...cure at a second look. This only makes sense to me if you are working with __dict__, and the keywords are going to become attributes later, something like that.
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How do I specify a single test in a file with nosetests?
I have a file called test_web.py containing a class TestWeb and many methods named like test_something().
6 Answers
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What are five things you hate about your favorite language? [closed]
... and so hideously wrong I have never used it (see http://www.php.net/create_function).
3) A try/catch system which can only catch about 80% of errors that might occur.
4) Regex support just as lame as lambda support because it has to be written inside regular strings, making one of the most hard-t...
Custom exception type
...){
Object.setPrototypeOf(CustomError, Error);
} else {
CustomError.__proto__ = Error;
}
Alternative: use Classtrophobic framework
Explanation:
Why extending the Error class using ES6 and Babel is a problem?
Because an instance of CustomError is not anymore recognized as such.
class Cus...