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I want to give the user input pattern as input1: 00,01,10,11 and another input as input2: 0.1,0.2,0.24,0.5 and these inputs I am giving alternate value as one by one from these two inputs. For giving user input I am using: input = int(raw_input()). But my desired output should be in separate 2-d array as [[0,0],[0,1],[1,0],[1,1]] and [[0.1],[0.2],[0.24],[0.5]] please give me good idea for this.

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Your rules for parsing user input are not clear. Should 0.11 become [0.1, 1] or [0.11], for example? Should 111 be [1, 1, 1], [11, 1], or [1, 11]? Should the values in the inner lists be integers, strings, floats...? Look into str.split. –  jonrsharpe Mar 4 at 14:12
 
If the input is 000,010,101,111, what's the output? I can't follow you clearly. –  zybjtu Mar 4 at 14:15
 
@jonrsharpe actually the input1 is in binary and input2 is in float.And output pattern is as given above –  Latik Mar 4 at 14:17
 
@Latik please update your question with clearer descriptions of: 1. the input data you are expecting; 2. your rules for interpreting it; and 3. what you have written so far. –  jonrsharpe Mar 4 at 14:19
 
@zybjtu the output should be in 2-d pattern as [[0,0,0],[0,1,0],[1,0,1],[1,1,1]], actually these values are in binary. –  Latik Mar 4 at 14:23
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1 Answer

up vote 0 down vote accepted

You can use str.split to convert the string input into a list of substrings:

"0.1,0.2".split(",") == ["0.1", "0.2"]

and map to apply some processing rule to those substrings; in your second case, this is conversion to float:

map(float, "0.1,0.2".split(",")) == [0.1, 0.2]

Your first example (binary strings to lists of integers) will require a custom function for map, for example:

map(lambda s: map(int, s), "001,010".split(",")) == [[0, 0, 1], [0, 1, 0]]

Note that in Python 3.x map is an iterator, so you may need to explicitly convert it to a list.

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here we are giving the value directly but what I want is the value should be given as user input i.e. input = int(raw_input()) –  Latik Mar 4 at 14:36
 
Then either assign the user input to a name then process it: ui = raw_input(prompt); input = map(float, ui.split(",")) or put raw_input into the appropriate place, e.g. input = map(float, raw_input(prompt).split(",")) –  jonrsharpe Mar 4 at 14:39
 
here I am getting error as NameError: name 'prompt' is not defined –  Latik Mar 4 at 14:49
 
Yes, you will need to define prompt, i.e. the message that the user should see requesting their input. For example, prompt = "Enter binary strings, separated by commas: " –  jonrsharpe Mar 4 at 14:55
 
ok.. I got this but still the output is not in 2-d array, it is giving as [0.1,0.21,0.114] and what i want is [[0.1],[0.21],[0.114]] –  Latik Mar 4 at 15:01
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