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Python 2.7 getting user input and manipulating as string without quotations
...ter a number: ")) #integer input
If you enter a string for int cast ValueError: invalid literal for int() with base 10:
x = float(input("Enter a float number: ")) #float input
If you enter a string for float cast ValueError: could not convert string to float
x = eval(input("Enter a float numbe...
What's the function like sum() but for multiplication? product()?
...Older info: Python 3.7 and prior
The function you're looking for would be called prod() or product() but Python doesn't have that function. So, you need to write your own (which is easy).
Pronouncement on prod()
Yes, that's right. Guido rejected the idea for a built-in prod() function because he t...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
... upsert. You should make sure this is indexed
--stopOnError stop importing at first error rather than continuing
--jsonArray load a json array, not one item per line. Currently limited to 4MB.
参数说明：
-h:指明数据库宿主机的IP
-u:指明...
What is the meaning of single and double underscore before an object name?
...ent call last):
File "<stdin>", line 1, in <module>
AttributeError: myClass instance has no attribute '__superprivate'
>>> print mc._semiprivate
, world!
>>> print mc.__dict__
{'_MyClass__superprivate': 'Hello', '_semiprivate': ', world!'}
...
Convert a date format in PHP
... Yeah, answered as you submitted yours I believe. Of course the error checking found in strtotime may be something useful.
– Tim Lytle
Mar 21 '10 at 18:44
2
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typeof !== “undefined” vs. != null
...have been declared before:
if(typeof neverDeclared === "undefined") // no errors
if(neverDeclared === null) // throws ReferenceError: neverDeclared is not defined
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Unauthorised webapi call returning login page rather than 401
...sed for controllers with views. Http.AuthorizeAttribute will return a 401 error if authorization fails and Mvc.AuthorizeAttribute will redirect to the login page.
Updated 11/26/2013
So it appears things have drastically changed with MVC 5 as Brock Allen pointed out in his article. I guess the OW...
How to save all the variables in the current python session?
...y in dir():
try:
my_shelf[key] = globals()[key]
except TypeError:
#
# __builtins__, my_shelf, and imported modules can not be shelved.
#
print('ERROR shelving: {0}'.format(key))
my_shelf.close()
To restore:
my_shelf = shelve.open(filename)
for key i...
How to create an empty file at the command line in Windows?
...one I use is basically the one by Nomad:
.>out.txt
It does give an error:
'.' is not recognized as an internal or external command
But this error is on stderr. And > only redirects stdout, where nothing have been produced.
Hence the creation of an empty file. The error message can be ...
How to allow http content within an iframe on a https site
...e but when a file referenced is using http, not https, I get the following error:
9 Answers
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