Use the [`replace` method](https://docs.python.org/3/library/datetime.html#datetime.datetime.replace) to generate a new `datetime` object based on your existing one:

    tomorrow = tomorrow.replace(hour=12)

&gt; Return a datetime with the same attributes, except for those attributes given new values by whichever keyword arguments are specified. Note that `tzinfo=None` can be specified to create a naive datetime from an aware datetime with no conversion of date and time data.

Try this:

    tomorrow = datetime.datetime(tomorrow.year, tomorrow.month, tomorrow.day, 12, 0, 0)


How can I import all types from certain file?

Let&#39;s say I have `myClass.ts` and `otherClass.ts`.
I want to import all classes from `otherClass.ts`.

I&#39;ve seen few syntaxes for imports.

    import ClassA, { ClassB, ClassC } from &#39;otherClass&#39;;

    import * as foo from &#39;otherClass&#39;;

    import foo = require(&#39;otherClass&#39;);

    import &#39;rxjs/Rx&#39;;


1. The first needs me to list everything. I&#39;d like to import all types.

2. The second syntax needs the namespace prefix: `foo.ClassA`.

3. I understand that the last one is TypeScript 1.4, but still supported.

Is there something like the following?

    import * from &quot;otherClass&quot;;
    ...
       var x = new ClassA()

Also, what&#39;s the meaning of the `{ ... }` and some of the types being outside and some inside? 

The [documentation][1] doesn&#39;t hint anything such.

  [1]: https://www.typescriptlang.org/docs/handbook/modules.html

TypeScript / JavaScript - import all types

I have a file with text and numbers with a length of 5 (i.e. `12000`, `11153`, etc.). I want to append all of these numbers with a `0`. So `11153` becomes `111530`. Is this possible in Notepad++?

I know I can find all numbers with the following regex: `[0-9]{5}`, but how can I replace these with the same number, plus an appending `0`?

In the replacement box I tried the following things:

* `[0-9]{5}0` - Which it took literally, so `11153` was replaced with `[0-9]{5}0`
* `\10`  - I read somewhere that `\1` would take the match, but it doesn&#39;t seem to work. This will replace `11153` with `0`
* EDIT: `\00` - Based on this [SO answer](https://stackoverflow.com/a/19575551/1682559) I see I need to use `\0` instead of `\1`. It still doesn&#39;t work though. This will replace `11153` with  ` `

So, I&#39;ve got the feeling I&#39;m close with the `\1` or `\0`, but not close enough.

Notepad++ Replace regex match for same text plus appending character

I want to calculate the seconds between now and tomorrow 12:00. So I need to get tomorrow 12:00 `datetime` object.

This is pseudo code:
    
    today_time = datetime.datetime.now()
    tomorrow = today_time + datetime.timedelta(days = 1)
    tomorrow.hour = 12
    result = (tomorrow-today_time).total_seconds()

But it will raise this error:

    AttributeError: attribute &#39;hour&#39; of &#39;datetime.datetime&#39; objects is not writable

How can I modify the hour or how can I get a tomorrow 12:00 `datetime` object?    

How to modify datetime.datetime.hour in Python?

I want to calculate the seconds between now and tomorrow 12:00. So I need to get tomorrow 12:00 <code>datetime</code> object.
This is pseudo code:
<pre><code class="hljs language-ini">today_time = datetime.datetime.now()
tomorrow = today_time + datetime.timedelta(days = 1)
tomorrow.hour = 12
result = (tomorrow-today_time).total_seconds()
</code></pre>
But it will raise this error:
<pre><code class="hljs language-csharp">AttributeError: attribute 'hour' of 'datetime.datetime' objects is not writable
</code></pre>
How can I modify the hour or how can I get a tomorrow 12:00 <code>datetime</code> object?

How can I find out if a function or method is a normal function or an async function? I would like my code to automatically support normal or async callbacks and need a way to test what type of function is passed.

    async def exampleAsyncCb():
        pass

    def exampleNomralCb():
        pass

    def isAsync(someFunc):
        #do cool dynamic python stuff on the function
        return True/False

	async def callCallback(cb, arg):
		if isAsync(cb):
			await cb(arg)
		else:
			cb(arg)

And depending on what type of function gets passed it should either run it normally or with await. I tried various things but have no idea how to implement `isAsync()`.

Test if function or method is normal or asynchronous

I use a third-party library that&#39;s fine but does not handle inexistant files the way I would like. When giving it a non-existant file, instead of raising the good old 

    FileNotFoundError: [Errno 2] No such file or directory: &#39;nothing.txt&#39;

it raises some obscure message:

    OSError: Syntax error in file None (line 1)

I don&#39;t want to handle the missing file, don&#39;t want to catch nor handle the exception, don&#39;t want to raise a custom exception, neither want I to `open` the file, nor to create it if it does not exist.

I only want to check it exists (`os.path.isfile(filename)` will do the trick) and if not, then just raise a proper FileNotFoundError.

I tried this:

    #!/usr/bin/env python3
    
    import os
    
    if not os.path.isfile(&quot;nothing.txt&quot;):
    	raise FileNotFoundError

what only outputs:

    Traceback (most recent call last):
      File &quot;./test_script.py&quot;, line 6, in &lt;module&gt;
        raise FileNotFoundError
    FileNotFoundError

This is better than a &quot;Syntax error in file None&quot;, but how is it possible to raise the &quot;real&quot; python exception with the proper message, without having to reimplement it?


How do I raise a FileNotFoundError properly?

It&#39;s clearly stated in the [docs][1] that int(number) is a flooring type conversion:

    int(1.23)
    1
and int(string) returns an int if and only if the string is an integer literal.

    int(&#39;1.23&#39;)
    ValueError

    int(&#39;1&#39;)
    1

Is there any special reason for that? I find it counterintuitive that the function floors in one case, but not the other.



  [1]: https://docs.python.org/3.5/library/functions.html#int

Counterintuitive behaviour of int() in python

I am able to run redis locally and everything works. 

However when I deploy to heroku I get this error: 

    Error 111 connecting to localhost:6379. Connection refused. 

I have set up a Procfile with...

    web: gunicorn odb.wsgi --log-file -
    worker: python worker.py

I have a worker.py file...

    import os
    import urlparse
    from redis import Redis
    from rq import Worker, Queue, Connection

    listen = [&#39;high&#39;, &#39;default&#39;, &#39;low&#39;]

    redis_url = os.getenv(&#39;REDISTOGO_URL&#39;)
    if not redis_url:
        raise RuntimeError(&#39;Set up Redis To Go first.&#39;)

    urlparse.uses_netloc.append(&#39;redis&#39;)
    url = urlparse.urlparse(redis_url)
    conn = Redis(host=url.hostname, port=url.port, db=0, password=url.password)

    if __name__ == &#39;__main__&#39;:
    with Connection(conn):
        worker = Worker(map(Queue, listen))
        worker.work()


A REDISTOGO_URL variable appears in the heroku config.

Redis to go is an installed add-on for my app. 

Does REDISTOGO_URL have to be defined in settings.py? Why is heroku trying to connect to the local host when it is not even defined in worker.py? 




Error 111 connecting to localhost:6379. Connection refused. Django Heroku

Say I have a list of items, and I want to iterate over the first few of it:

    items = list(range(10)) # I mean this to represent any kind of iterable.
    limit = 5

## Naive implementation

The Python na&#239;f coming from other languages would probably write this perfectly serviceable and performant (if unidiomatic) code:

    index = 0
    for item in items: # Python&#39;s `for` loop is a for-each.
        print(item)    # or whatever function of that item.
        index += 1
        if index == limit:
            break

## More idiomatic implementation

But Python has enumerate, which subsumes about half of that code nicely:

    for index, item in enumerate(items):
        print(item)
        if index == limit: # There&#39;s gotta be a better way.
            break

So we&#39;ve about cut the extra code in half. But there&#39;s gotta be a better way.

# Can we approximate the below pseudocode behavior?

If enumerate took another optional `stop` argument (for example, it takes a `start` argument like this: `enumerate(items, start=1)`) that would, I think, be ideal, but the below doesn&#39;t exist (see the [documentation on enumerate here][1]):

    # hypothetical code, not implemented:
    for _, item in enumerate(items, start=0, stop=limit): # `stop` not implemented
        print(item)

Note that there would be no need to name the `index` because there is no need to reference it.

Is there an idiomatic way to write the above? How?

A secondary question: why isn&#39;t this built into enumerate?


  [1]: https://docs.python.org/3/library/functions.html#enumerate

How can I limit iterations of a loop in Python?

Date is in &#39;YYYY-MM-DD&#39; text format, now I need to extract the year part which must be in numeric. I need this conversion to be done in single step, Since I need to use in other application where i cannot create new variable.

TO_DATE(t0.AESTDTC,&#39;YYYY-MM-DD&#39;),&#39;YYYY-MM-DD&#39; with this i was able to convert to date but Now i need to Extract the year from this date in single step? can any one help me?

How to Extract Year from DATE in POSTGRESQL

I&#39;m trying to deserialize an ISO8601 formatted date into Java8 `java.time.Instant` using Jackson. I registered JavaTimeModule with the ObjectMapper, and turned off the `WRITE_DATES_AS_TIMESTAMPS` setting.

However, if one tries to deserialize `2016-03-28T19:00:00.000+01:00` it will not work, because it seems that JavaTimeModule will only deserialize date-times formatted with UTC timezone offset (e.g. `2016-03-28T18:00:00.000Z`). I then tried using `@JsonFormat` annotation like this:

    @JsonFormat(shape=JsonFormat.Shape.STRING, pattern=&quot;yyyy-MM-dd&#39;T&#39;HH:mm:ss.SSSZ&quot;, timezone = &quot;UTC&quot;)

And like this:

    @JsonFormat(shape=JsonFormat.Shape.STRING, pattern=&quot;yyyy-MM-dd&#39;T&#39;HH:mm:ss.SSSZ&quot;, timezone = JsonFormat.DEFAULT_TIMEZONE)

However, neither of these work and I get an exception:

    com.fasterxml.jackson.databind.JsonMappingException: Unsupported field: YearOfEra (through reference chain: org.example.Article[&quot;date&quot;])

Which implies that timezone parameter is ignored and date time formatter doesn&#39;t know how to format an Instant without a timezone. 

Is there a way to deserialize a ISO8601 string that&#39;s not in UTC time zone offset to Java 8 `java.time.Instant` using Jackson and JavaTimeModule without writing a custom deserializer?
 
 

Jackson deserialize ISO8601 formatted date-time into Java8 Instant

I have a weekday integer (0,1,2...) and I need to get the day name (&#39;Monday&#39;, &#39;Tuesday&#39;,...).

Is there a built in Python function or way of doing this?

Here is the function I wrote, which works but I wanted something from the built in datetime lib.

    def dayNameFromWeekday(weekday):
        if weekday == 0:
            return &quot;Monday&quot;
        if weekday == 1:
            return &quot;Tuesday&quot;
        if weekday == 2:
            return &quot;Wednesday&quot;
        if weekday == 3:
            return &quot;Thursday&quot;
        if weekday == 4:
            return &quot;Friday&quot;
        if weekday == 5:
            return &quot;Saturday&quot;
        if weekday == 6:
            return &quot;Sunday&quot;



Get Day name from Weekday int

I&#39;m running MySql Server 5.7.11 and this sentence:

    updated datetime NOT NULL DEFAULT &#39;0000-00-00 00:00:00&#39;

is **not** working. Giving the error:

    ERROR 1067 (42000): Invalid default value for &#39;updated&#39;

But the following: 

    updated datetime NOT NULL DEFAULT &#39;1000-01-01 00:00:00&#39;

**just works**.  

The same case for DATE.

As a *sidenote*, it is mentioned in the [MySQL docs][1]:  

&gt; The DATE type is used for values with a date part but no time part. MySQL retrieves and displays DATE values in &#39;YYYY-MM-DD&#39; format. The supported range is &#39;1000-01-01&#39; to &#39;9999-12-31&#39;.  

even if they also say:

&gt; Invalid DATE, DATETIME, or TIMESTAMP values are converted to the “zero” value of the appropriate type (&#39;0000-00-00&#39; or &#39;0000-00-00 00:00:00&#39;).
  
Having also into account the second quote from MySQL documentation, could anyone let me know why it is giving that error?  




  [1]: http://dev.mysql.com/doc/refman/5.7/en/datetime.html   





Error in MySQL when setting default value for DATE or DATETIME

I have a series within a DataFrame that I read in initially as an object, and then need to convert it to a date in the form of yyyy-mm-dd where dd is the end of the month.

As an example, I have DataFrame df with a column Date as an object:

    ...      Date    ...
    ...     200104   ...
    ...     200508   ...

What I want when this is all said and done is a date object:

    ...      Date    ...
    ...  2001-04-30  ...
    ...  2005-08-31  ...

such that df[&#39;Date&#39;].item() returns

    datetime.date(2001, 04, 30)

I&#39;ve used the following code to get almost there, but all my dates are at the beginning of the month, not the end. Please advise.

    df[&#39;Date&#39;] = pd.to_datetime(df[&#39;Date&#39;], format=&quot;%Y%m&quot;).dt.date

Note: I&#39;ve already imported Pandas ad pd, and datetime as dt


Content Type	Original Author	Original Content on Stackoverflow
Question	Mars Lee	View Question on Stackoverflow
Solution 1 - Python	Chris	View Answer on Stackoverflow
Solution 2 - Python	Selcuk	View Answer on Stackoverflow

How to modify datetime.datetime.hour in Python?

Python Problem Overview

Python Solutions

Solution 1 - Python

Solution 2 - Python

Notepad++ Replace regex match for same text plus appending character

TypeScript / JavaScript - import all types

Attributions