WEBVTT 00:00.510 --> 00:01.560 Hi and welcome back. 00:01.590 --> 00:08.430 So first we want to rename our Jupiter notebook from untitled to let's say. 00:08.620 --> 00:09.380 Thanks. 00:09.420 --> 00:13.440 So we are here on the Python basic section. 00:13.440 --> 00:16.920 And before we start coding we want to structure our notebook a little bit. 00:16.920 --> 00:22.610 So this is the good thing off to be the notebooks that we can combine code and text. 00:22.800 --> 00:29.380 And first of all we want to create a heading and therefore we have to change the setting of our set. 00:29.400 --> 00:35.490 So here we can see it's in the code setting and we want to create a heading which is a text actually 00:35.490 --> 00:38.710 and therefore we need in the markdown setting. 00:39.280 --> 00:47.160 And here we are already in the command mode and if you press and the M clear we can switch to markdown 00:47.330 --> 00:53.840 and alternatively we can also switch to markdown by just here going to the drop down menu and select 00:53.930 --> 00:56.680 markdown. 00:56.680 --> 00:57.040 All right. 00:57.040 --> 01:00.150 So now we can go into the cell and we want to create a headings. 01:00.160 --> 01:05.950 So we need to press the hash key and then make a space in there. 01:05.980 --> 01:12.930 Consider the font size already increases and then we can write our headings so let's call our heading 01:12.930 --> 01:21.140 Python basics and then we can run the set by pressing shift enter. 01:21.350 --> 01:28.730 So now here we have our heading and we are automatically in the next center and we want to make a subheading 01:29.840 --> 01:36.970 and first of all here we have to select the markdown mode and all we want to create a soft pedal. 01:36.970 --> 01:44.280 So we take two hash keys and an empty space and let's say we want to enumerate our session. 01:44.290 --> 01:47.760 So this is the first session about the first steps 01:54.600 --> 02:01.710 so we can see with two hash keys our font size is a little bit smaller than um our header here was the 02:01.740 --> 02:02.780 one hash key. 02:03.630 --> 02:05.670 So let's run here. 02:05.840 --> 02:11.790 So now before we want to create our first code we want to explain what we will do in this session here. 02:11.900 --> 02:26.480 That's against select markdown and then let's explain in this session you have to learn the basics of 02:28.040 --> 02:28.790 Python 02:33.660 --> 02:34.120 All right. 02:34.120 --> 02:39.280 So now we are finished with all our headings in our description and now we want to stop coding and before 02:39.280 --> 02:47.400 we are again going to the command mode here and pressing the B key a few times so we add some lines 02:47.400 --> 02:55.260 here and then we are going here to our first line and what we can do we are we can say okay we have 02:55.260 --> 02:58.010 a five here and we can just print out the five. 02:58.020 --> 03:04.880 So the input is five and the output of our code is five so five is simply five. 03:04.960 --> 03:13.020 As you can see here yeah actually we can use python as a calculator to perform basic mathematical operations. 03:13.020 --> 03:23.060 So for example we can make an addition of five plus one gets six and we can solve strict. 03:23.060 --> 03:26.360 So for example five minus one gets us for 03:31.630 --> 03:42.180 and of course we can also multiply five times to gets 10 and we can also make an exponential so we can 03:42.180 --> 03:54.310 say five to the power of two gives twenty five and we can also divide so we can say five slashes um 03:54.380 --> 03:56.140 divided by two. 03:57.320 --> 04:03.990 And discuss 2.5 and Ann Pace and s and the fangs and type 04:06.530 --> 04:13.860 and in the brackets you can pass an object like here our number four or 2.5. 04:13.880 --> 04:16.400 And the function type checks. 04:16.520 --> 04:20.750 Then what data type the object that was passed in the brackets. 04:20.810 --> 04:21.190 Um yeah. 04:21.200 --> 04:21.850 Yes actually. 04:21.880 --> 04:25.340 So let's try to find out what five. 04:25.460 --> 04:26.650 Which data type it is. 04:27.410 --> 04:34.340 And it's in that uh so an integer is just a number without any decimals. 04:34.340 --> 04:39.680 And we can also check the data type of 2.5 04:42.140 --> 04:44.350 and 2.5 as a float object. 04:44.380 --> 04:52.090 So a float object tests in some decimals after the point here so the type function as the other first 04:52.090 --> 04:54.180 example of a function in Python. 04:54.550 --> 05:01.030 So you can parse an object like 5 or 2.5 within the brackets of the function and then the function does 05:01.240 --> 05:09.470 something with the object and in this case it determines and the data type of object. 05:09.490 --> 05:11.890 Now you could ask what is in objects on Python. 05:11.920 --> 05:16.540 Everything is an object cost Python is an object oriented programming language. 05:16.540 --> 05:21.220 However at this point I do not want to go into details of object oriented programming. 05:21.250 --> 05:25.710 So what is important for you is actually that the each element we are working with. 05:25.710 --> 05:32.810 So for example here the 5 for 2.5 is an object and python and objects can be of different data types. 05:32.810 --> 05:40.240 So Fyfe isn't in the john 2.5 is a float object and different data types have different functionalities 05:40.270 --> 05:45.700 but we will learn more about it and the next session's about into just float strings and so on. 05:46.120 --> 05:53.860 So what we can do now we can type something here in quotation mark let's say Doc and it returns our 05:53.860 --> 05:56.590 stock. 05:56.650 --> 06:05.830 So now again let's add some lines service that's the key key and if you check the type of dog it gives 06:05.830 --> 06:12.880 us the string so dog is a string object and string object is actually a sequence of characters which 06:12.880 --> 06:16.160 was created within quotation marks. 06:16.210 --> 06:23.070 So my name is Alex and I can just write here my name in quotation mark and uh this is a string also. 06:23.350 --> 06:24.570 However what does not work. 06:24.580 --> 06:28.050 We cannot just write dark here. 06:28.240 --> 06:36.080 So this drops us an error message and says and the name Dog is not defined so when we write dark here 06:36.080 --> 06:37.400 without quotation marks. 06:37.400 --> 06:44.450 Python assumes that Doc is viable which was defined earlier but yeah it does not find any information 06:44.450 --> 06:46.160 on the variable dog. 06:46.160 --> 06:49.430 So and then it drops them an error message. 06:49.430 --> 06:53.330 And of course the will learn later was Latin revivalists in detail. 06:53.540 --> 07:00.230 But now let's go on with one more thing we want to learn so let's assume here in a set of we want to 07:00.230 --> 07:06.640 make two calculations so let's say five plus two and then four minus one. 07:06.650 --> 07:12.440 And then if you run the third we only get the result of the last statement and our side so far minus 07:12.440 --> 07:19.070 one gives us three but this does not mean that and do not say I calculate also five plus two and actually 07:19.070 --> 07:21.380 pace and thus calculate five plus two. 07:21.380 --> 07:28.120 But we do not see it here in the output and if you want to print a many statements we have to use and 07:28.130 --> 07:31.520 the function print so print is also a function 07:34.280 --> 07:40.310 and within the brackets we can pass an statement which we want to see in the output. 07:40.310 --> 07:51.340 So for example five plus two and again we can take four minus one and if we run the set now we get to 07:51.370 --> 07:57.700 the output of both statements so five plus to give seven and four minus one gives us three and we can 07:57.700 --> 08:06.520 also pass both calculations within the brain function so we can say print five plus two comma and Four 08:06.520 --> 08:17.130 minus one guess seven and three but this is also an advantage of Jupiter notebook if we only want to 08:17.130 --> 08:18.810 print let's say five. 08:18.840 --> 08:23.480 We can just type five and around the set and this gives us five. 08:23.490 --> 08:32.580 So we do not have to explicitly say here please print me five so encoding environments other than to 08:32.580 --> 08:38.390 put a notebook we always have to use in the print function but the two bits are not book notes here 08:38.390 --> 08:41.430 in this example okay I should print five. 08:41.450 --> 08:47.300 So we do not have to explicitly write print here and took it a notebook but it gives the actually the 08:47.300 --> 08:48.980 same result. 08:49.000 --> 08:55.110 All right so this some of the basics of Python and then the next session we will have a look at a variable. 08:55.120 --> 08:56.950 So I hope to see you there by.