Get a list of numbers as input from the user

Question

I tried to use raw input   to get a list of numbers  however with the code  numbers   raw input   print len numbers    the input  1 2 3  gives a result of 7  so I guess it interprets the input as if it were a string  Is there any direct way to make a list out of it  Maybe I could use re findall to extract the integers  but if possible  I would prefer to use a more Pythonic solution

User · Accepted Answer

In Python 3 x  use this   a    int x  for x in input   split      Example   gt  gt  gt  a    int x  for x in input   split    3 4 5  gt  gt  gt  a  3  4  5   gt  gt  gt

User · Answer

You can use  split    numbers   raw input   split      print len numbers    This will still give you strings  but it will be a list of strings   If you need to map them to a type  use list comprehension   numbers    int n  10  for n in raw input   split       print len numbers    If you want to be able to enter in any Python type and have it mapped automatically and you trust your users IMPLICITLY then you can use eval

User · Answer

a    b int input    for i in range b       c int input        a append c    The above code snippets is easy method to get values from the user

User · Answer

try this one    n int raw input  Enter length of the list    l1    for i in range n       a raw input       if a isdigit             l1 insert i float a    statement1     else          l1 insert i a          statement2   If the element of the list is just a number the statement 1 will get executed and if it is a string then statement 2 will be executed  In the end you will have an list l1 as you needed

User · Answer

num   int input  Size of elements       arr   list    for i in range num      ele    int input      arr append ele   print arr

User · Answer

Answer is trivial  try this   x input    Suppose that  1 3 5  aA   8as   are given as the inputs  print len x   this gives an answer of 5  print x 3   this gives  aA

User · Answer

It is much easier to parse a list of numbers separated by spaces rather than trying to parse Python syntax   Python 3   s   input   numbers   list map int  s split       Python 2   s   raw input   numbers   map int  s split

User · Answer

you can pass a string representation of the list to json   import json  str list   raw input  Enter in a list     my list   json loads str list    user enters in the list as you would in python   2  34  5 6  90

User · Answer

Another way could be to use the for-loop for this one   Let s say you want user to input 10 numbers into a list named  memo    memo     for i in range  10       x int input  enter no   n         memo insert i x      i  1 print memo

User · Answer

eval a string  evaluates a string as Python code  Obviously this is not particularly safe  You can get safer  more restricted  evaluation by using the literal eval function from the ast module   raw input   is called that in Python 2 x because it gets raw  not  interpreted  input  input   interprets the input  i e  is equivalent to eval raw input      In Python 3 x  input   does what raw input   used to do  and you must evaluate the contents manually if that s what you want  i e  eval input

User · Answer

I think if you do it without the split   as mentioned in the first answer  It will work for all the values without spaces  So you don t have to give spaces as in the first answer which is more convenient I guess     a    int x  for x in input    a   Here is my ouput   11111  1  1  1  1  1

User · Answer

Get a list of number as input from the user   This can be done by using list in python   L list map int input   split       Here L indicates list  map is used to map input with the position  int specifies the datatype of the user input which is in integer datatype  and split   is used to split the number based on space

[python] Get a list of numbers as input from the user

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