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Diffstat (limited to 'getting_started_with_ipython/script.rst')
| -rw-r--r-- | getting_started_with_ipython/script.rst | 151 |
1 files changed, 95 insertions, 56 deletions
diff --git a/getting_started_with_ipython/script.rst b/getting_started_with_ipython/script.rst index 7f9b432..b5942ca 100644 --- a/getting_started_with_ipython/script.rst +++ b/getting_started_with_ipython/script.rst @@ -26,7 +26,10 @@ Script ------ .. L1 -{{{ Show the first slide containing title, name of the production team along with the logo of MHRD }}} + +{{{ Show the first slide containing title, name of the production +team along with the logo of MHRD }}} + .. R1 @@ -43,8 +46,8 @@ At the end of this tutorial, you will be able to, 1. invoke the ``ipython`` interpreter . #. quit the ``ipython`` interpreter. - #. navigate in the history of ``ipython``. - #. use of tab-completion for writing ipython functions. + #. navigate the ``ipython`` session history. + #. use tab-completion for writing ipython functions. #. look-up documentation of functions. #. interrupt incomplete or incorrect commands. @@ -57,6 +60,7 @@ open the terminal, type ``ipython`` in the terminal and hit enter. .. L3 :: + ipython .. R4 @@ -81,19 +85,22 @@ type Ctrl-D. .. R6 -A prompt will apperar to confirm whether you really want to exit, type y to say yes and quit ipython -and n to say no if you dont want to quit the ipython. Press y. +A prompt will apperar to confirm whether you really want to exit, type +y to say yes and quit ipython and n to say no if you dont want to quit +the ipython. Press y. .. L6 Press y and hit enter. .. R7 -Now since we have quit the interpretor, let us start it again by typing `` ipython`` +Now since we have quit the interpretor, let us start it again by +typing ``ipython`` .. L7 :: + ipython .. R8 @@ -102,9 +109,8 @@ And now let's see, how to use the interpreter. Start with the simplest thing, addition. -type 1+2 at the prompt. IPython promptly gives back the output -as 3. Notice that the output is displayed with an ``Out[1]`` -indication. +type 1+2 at the prompt. IPython promptly gives back the output as 3. +Notice that the output is displayed with an ``Out[1]`` indication. .. L8 @@ -133,25 +139,30 @@ Now let's see how the ipython remembers the history of commands ? let's try an example ``print 1+2``. Instead of typing the whole thing,use the up arrow key to go back to -the command ``1+2`` which we did before, now use the -left-arrow key to navigate to the beginning of the line and type the -word``print``and press space.We have changed the line to print 1+2, now press enter. -The interpreter prints the result as 3. Please note that the indication Out square brackets is not shown here. +the command ``1+2`` which we did before, now use the left-arrow key to +navigate to the beginning of the line and type the word``print``and +press space.We have changed the line to print 1+2, now press enter. +The interpreter prints the result as 3. Please note that the +indication Out square brackets is not shown here. .. L10 {{Use the up arrow key to go back to the command ``1+2``}} {{Use left arrow to navigate to start of line }} Type + :: + 'print' + {{Hit enter}} {{Point at the Out[] prompt}} .. R11 -Now let us do print 10 into 2. -We use the up arrow key to navigate to the previous command 1+2. Now change ``1 plus 2`` to ``10 into 2`` and press enter. +Now let us do print 10 into 2. We use the up arrow key to navigate to +the previous command 1+2. Now change ``1 plus 2`` to ``10 into 2`` and +press enter. .. L11 @@ -159,13 +170,17 @@ We use the up arrow key to navigate to the previous command 1+2. Now change ``1 .. R12 -Till now, we saw how to invoke the ipython interpreter,quit the ipython and navigate through previous commands in ipython. -Now, let's see, what is tab-completion?. - let's take an example, suppose we want to use the function ``round``. For this we just -type ``ro``at the prompt and press the tab key. +Till now, we saw how to invoke the ipython interpreter,quit the +ipython and navigate through previous commands in ipython. Now, let's +see, what is tab-completion?. let's take an example, suppose we want +to use the function ``round``. For this we just type ``ro`` at the +prompt and press the tab key. .. L12 -:: ro<tab> + +:: + + ro<tab> .. R13 @@ -184,6 +199,7 @@ just type ``r`` and then press the tab. .. L14 :: + r<tab> .. R15 @@ -203,14 +219,14 @@ out all the possible completions of r. .. R16 Now let's try out an exercise.Pause the video and solve the problem. - 1.find out the commands starting with "ab"? - 2.list out the commands starting with "a"? + + 1. find out the commands starting with "ab"? + 2. list out the commands starting with "a"? .. R17 -``ab`` tab completes to ``abs`` and - ``a<tab>`` gives us a list of all -the commands starting with a. +``ab`` tab completes to ``abs`` and ``a<tab>`` gives us a list of all +the commands starting with a. .. L17 @@ -221,11 +237,15 @@ the commands starting with a. .. R18 Now, let's see what the functions abs is used for. We will use the -help features of ipython to find out this. -To see the documentation of a function, type the function name followed by a question mark, and hit enter. Ipython interpreter will show the documentation for the function. -Lets us see the documentation of the function abs, type abs? and press enter +help features of ipython to find out this. To see the documentation +of a function, type the function name followed by a question mark, and +hit enter. Ipython interpreter will show the documentation for the +function. Lets us see the documentation of the function abs, type +abs? and press enter .. L18 + +:: abs? @@ -249,11 +269,13 @@ We get 19, as expected, in both the cases. .. R20 -Now lets try it for decimal numbers; lets try abs(-10.5), we got 10.5 as the result. +Now lets try it for decimal numbers; lets try abs(-10.5), we got 10.5 +as the result. .. L20 :: + abs(-10.5) .. R21 @@ -267,11 +289,14 @@ Now try to solve Following exercise, .. L22 -:: round? +:: + + round? .. R22 -And you can look up the documentation of the function round by typing round question mark in the ipython interpreter. +And you can look up the documentation of the function round by typing +round question mark in the ipython interpreter. .. L23 @@ -290,12 +315,15 @@ The function ``round``, rounds a number to a given precision. Let us now try few more examples with the function round. Check the output of -round(2.48) -round(2.48,1) -round(2.48,2) -round(2.484) -round(2.484,1) -round(2.484,2) + +:: + + round(2.48) + round(2.48,1) + round(2.48,2) + round(2.484) + round(2.484,1) + round(2.484,2) .. L24 @@ -311,20 +339,24 @@ We got 2.0, 2.5, and 2.48 as expected. .. R26 -Let's now see how to correct typing errors which we often make while typing at -the terminal. As already shown, if we haven't hit the enter key -already, we could navigate using the arrow keys and make deletions -using delete or backspace key and correct the errors. +Let's now see how to correct typing errors which we often make while +typing at the terminal. As already shown, if we haven't hit the enter +key already, we could navigate using the arrow keys and make deletions +using delete or backspace key and correct the errors. let us make a typing error deliberately, type + :: + round(2.484 - and hit enter, without closing the parenthesis. + +and hit enter, without closing the parenthesis. .. L26 :: + round(2.484 {{Hit enter}} @@ -338,7 +370,9 @@ press enter. We got the expected output that is 2.0 .. L27 {{ Point at the prompt with three dots }} + :: + ) .. R28 @@ -351,6 +385,7 @@ type Ctrl-C to interrupt the command and to get back to the .. L28 <Type any big random number> + :: round(35.488762320 @@ -359,8 +394,9 @@ type Ctrl-C to interrupt the command and to get back to the .. R29 Try the following exercise -1. type round(2.484, and press enter. and then cancel the -command using Ctrl-C. + +1. type round(2.484, and press enter. and then cancel the command + using Ctrl-C. 2. type the command, round(2.484, 2) .. L29 @@ -373,6 +409,7 @@ command using Ctrl-C. { show the solution on terminal and slide } :: + round(2.484 ^C @@ -398,23 +435,24 @@ let's revise quickly what we have learnt today. .. R32 Here are some self assessment questions for you to solve - {{Show self assessment questions slide}} -Here are some self assessment questions for you to solve 1. Ipython is a programming similar to Python? True or False -2. Which key combination quits “ipython”? - Ctrl + C - Ctrl + D - Alt + C - Alt + D +2. Which key combination quits ``ipython``? + + - Ctrl + C + - Ctrl + D + - Alt + C + - Alt + D -3. Which character is used at the end of a command, in Ipython to display the documentation. - under score (_) - question mark (?) - exclamation mark (!) - ampersand (&) +3. Which character is used at the end of a command, in Ipython to + display the documentation. + + - under score (_) + - question mark (?) + - exclamation mark (!) + - ampersand (&) .. L32 @@ -429,6 +467,7 @@ Here are some self assessment questions for you to solve .. R33 And the answers, + 1. Ipython is not a programming language, it is just an interpreter. 2. We use Ctrl D to quit Ipython interpreter. 3. We use ? at the end of the function name to display its documentation. |