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Great we have a while loop there that will make sure our script will run all the time.

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Specifically every five seconds. Now inside this while loop we want to check the time.

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So we're talking about a conditional. When we're talking about conditionals we think about if and else.

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So while 2 which is always true and that means the script runs all the time and If.

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You know something about how we can check if time is between this and that.

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Well first of all we need to import the data to a module.

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So we have a daytime class inside the date time module which should be so the date time class from the date time

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module. So import datetime class. Maybe as dt.

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So this will be assigned the dt namespace.

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I'm doing this because this expresion will be quite long so it's good to have a short name there instead

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of doing date time dot date time dot now etc..

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Instead we do dt.now.

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So we want to check the current time against 8:00 a.m. 4:00 p.m..

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Now the current time would look something like let me open a Python shell here.

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And from date time import date time as dt. Dt.now.

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So this is the current time. Your month, day, hour, minutes, seconds and milliseconds.

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Sorry, this is micro-seconds not milliseconds.

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Now this current time is being generated automatically.

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And as you know this is a spatial object.

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So it's not a string or a number.

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So it's a date time object.

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And what I'm trying to get here is that to compare these objects against the date time that we pass

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manually and you see how what I mean with passing manually, we need to compare these time objects with

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a similar object. That would make sense if you would just pass

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let's say you know something like a Tuple of 2016 and let's say five for month, five four day and then

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eight and then you compare this with let me call dt.now.

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So let me compare this with this Tuple. 2016, 5, 5 and 8.

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Of course you will get an error.

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So what you have to do instead is you'd call dt.now.

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So this object here.

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And then you create another object manually.

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So you called dt which is the date time class that we have imported earlier just here.

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And then inside the brackets you pass the values.

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I see that's that.

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And let me pass eight. And this is saying false.

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So which means this value is not less than this.

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Let me check the time now again and don't expect to get the same time as you did here.

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So now it's actually 9 p.m. And if you're wondering why is that.

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I had to interrupt the video so I had to pause the video around this time and then I went back like 12

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hours later.

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So now it's actually 9:00 p.m. in here and my computer was sleeping during this time.

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So that's just that if you were wondering why and that means that� That means this time it's not less than

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this.

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So it's not earlier than this.

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If you do for instance� Is it's greater then this, then you get true. Now in our case we need to check actually

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against two date times.

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So that would be something like a dt and you'd pass eight here so 8 a.m. and then here would be 16.

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So let's do that in our script instead of writing this in here.

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And yeah.

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We are here.

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So if dt and now I could pass here 2016 and this would probably work for this

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year.

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But it's not very sustainable.

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So what you want to do is work with variables instead off of values.

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What I'm trying to say is that instead of passing 2016 in there you can have Python generate a year

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on the fly for you.

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So dt.now.year.

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That would return 2016.

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Actually we can try that here. Dt.now.year. Yep.

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So this returns this value which is a string.

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So type.

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Sorry, it's an integer I meant to say an integer.

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So it's a number that dt ,the dt class reads it as the year.

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So the year and then dt.now.

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Again the month should also be a variable. Month and then dt.now.day.

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The only thing that we want to have fixed is the type so 8.

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And what we're trying to do is check if dt.now is greater than 8. So if it is greater than 8

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that means we are in the working hours.

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And also we want this to be less then 16.

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So what you do is just copy this and I forgot the brackets here.

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So you copy that paste it here bracket there and say 16 and then you have a column there for the if statement.

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So if this is true than you want to execute your other segment. So let's write something more informative.

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Working hours.

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And yeah, let me execute this.

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Python website blocker.

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We've got an invalid syntax.

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I think I messed up the brackets in here.

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This is ok

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but this one should be inside brackets.

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Yeah.

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This closes in here.

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This one closes there.

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This should be fine now.

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Let me try again. Unorderable types. This is comparing against a Tuple.

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Sorry about that.

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It's actually not a good idea to copy and paste things. As a general rule in programming you shouldn't

91
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copy and paste things. You should write them because when you copy and paste things you're

92
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prone to making errors like I did here.

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Now I'm doing copying and pasting here for the sake of video recording.

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So this is probably more convenient for you as it saves you time watching me to write things down so

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it's better to use your logic and just write things so that you focus on what you're doing.

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And yeah I think this error was good but it came up because now you know that's it's good to write

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things to write the code instead of pasting it.

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So we have dt here that creates the date time objects.

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This also creates a data time object and this one as well.

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So let me go again. Execute and nothing is happening.

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So that's actually the code is running but we don't have this print statement executed.

102
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The reason for that is that now it's 9:00 p.m. in here so we're not within the working hours.

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That brings us to the point that if interrupting this, if you want to print something when you are not

104
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in the working hours you'd want to add a else statement here.

105
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So say else print Fun hours. Save and yeah what we have this far is while True check for this condition

106
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and do this if that condition is true.

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So print out the working hours.

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Otherwise in this condition is not true.

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So if it is false as it was when I just executed the script then print this statement in here.

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And then sleep for five seconds so don't do.

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Don't execute the loop for five seconds and then go again and check the current time again.

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Against these two values.

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So yeah now we are in our fun hours. So every five seconds we get fun hours printed out. Great.

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00:10:22,380 --> 00:10:29,720
Yeah I think we have the structure of our script but we don't want to just print out this strings. What

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we want is we want to modify this file.

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So if it's between 8 and 4 pm we want to add those two lines in there.

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Otherwise we want to make sure those two lines are not there in the file.

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So it's quite a bit tricky to access that file and add this lines and check if these lines are there.

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But we'll crack that in next lectures.

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So see you there.