{"id":560,"date":"2010-10-12T09:53:27","date_gmt":"2010-10-12T09:53:27","guid":{"rendered":"http:\/\/cemclinux1.math.uwaterloo.ca\/~cscircles\/wordpress\/"},"modified":"2010-10-12T09:53:27","modified_gmt":"2010-10-12T09:53:27","slug":"5-input","status":"publish","type":"page","link":"https:\/\/olescs.hkmu.edu.hk\/python\/5-input\/","title":{"rendered":"5: Input"},"content":{"rendered":"\n

In the last lesson we discussed user input, but did not really explain how user input is obtained. In Python, the user types one line of input at a time. You should use the input()<\/code><\/code> function to actually obtain the next line of input from the user. The input()<\/code> function takes no arguments and always gives back a str.<\/code><\/p>\n

<\/td> On this website, all input must be specified before the program runs. If you run Python interactively at home<\/a> then input()<\/code> actually pauses the program and waits until the user types a line of text. Also, when working interactively, you can\u00a0take advantage of the fact that input()<\/code> accepts an optional string input, which will be interpreted as a prompt for the user. E.g., <\/p>\n
number = input(\"Enter a number between 0 and 100. \")<\/pre>  <\/span><\/td><\/table><\/p>\n
Here is an example of using input()<\/code> to get input. The grader will automatically specify the input for the program.<\/p>\n
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Example<\/span><\/div>Echoing a line of text