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How to change the DataTable Column Name?
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what if the original name 'Marks' can contain whitespace?
– lawphotog
Oct 12 '14 at 20:13
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How to output loop.counter in python jinja template?
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The counter variable inside the loop is called loop.index in jinja2.
>>> from jinja2 import Template
>>> s = "{% for element in elements %}{{loop.index}} {% endfor %}"
>>> Template(s).render(elements=["a", "b", "c", "d"])
1 2 3 4
See ...
UUID max character length
... Pretty sure UUIDv4 is only using the latin-1 charset of UTF-8, in which case this wont be affected. Definitely check if you are using a different charset though.
– Aaron_H
May 12 '17 at 16:24
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ValueError: math domain error
I was just testing an example from Numerical Methods in Engineering with Python .
4 Answers
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How to append multiple values to a list in Python
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You can use the sequence method list.extend to extend the list by multiple values from any kind of iterable, being it another list or any other thing that provides a sequence of values.
>>> lst = [1, 2]
>>> lst...
MySQL select with CONCAT condition
...output of the query - they are not available within the query itself.
You can either repeat the expression:
SELECT neededfield, CONCAT(firstname, ' ', lastname) as firstlast
FROM users
WHERE CONCAT(firstname, ' ', lastname) = "Bob Michael Jones"
or wrap the query
SELECT * FROM (
SELECT neede...
The type must be a reference type in order to use it as parameter 'T' in the generic type or method
... many other posts similar to this one but I'm not seeing the relationship. Can someone tell me how to resolve this?
3 Answe...
What does @: (at symbol colon) mean in a Makefile?
...his always happens
this always happens
Now, the action part of a rule can be any shell command, including :. Bash help explains this as well as anywhere:
$ help :
:: :
Null command.
No effect; the command does nothing.
Exit Status:
Always succeeds.
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How can I see the specific value of the sql_mode?
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It's only blank for you because you have not set the sql_mode. If you set it, then that query will show you the details:
mysql> SELECT @@sql_mode;
+------------+
| @@sql_mode |
+------------+
| |
+------------+
1 row in set (0.00 sec)
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arrow operator (->) in function heading
I came across the following code:
2 Answers
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