Python one-line for expression

Question

I m not sure if I need a lambda  or something else  But still  I need the following   I have an array    1 2 3 4 5   I need to put this array  for instance  into another array  But write it all in one line   for item in array      array2 append item    I know that this is completely possible to iterate through the items and make it one-line  But googling and reading manuals didn t help me that much    if you can just give me a hint or name this thing so that I could find what that is  I would really appreciate it   Update  let s say this  array2   SOME FANCY EXPRESSION THAT IS GOING TO GET ALL THE DATA FROM THE FIRST ONE   the example is NOT real  I m just trying to iterate through different chunks of data  but that s the best I could come up with

User · Accepted Answer

The keyword you re looking for is list comprehensions    gt  gt  gt  x    1  2  3  4  5   gt  gt  gt  y    2 a for a in x if a   2    1   gt  gt  gt  print y   2  6  10

User · Answer

for item in array  array2 append  item    Or  in this case   array2    array

User · Answer

If you re trying to copy the array   array2   array

User · Answer

Even array2 extend array1  will work

User · Answer

If you really only need to add the items in one array to another  the     operator is already overloaded to do that  incidentally   a1    1 2 3 4 5  a2    6 7 8 9  a1   a2 -- gt   1  2  3  4  5  6  7  8  9

[python] Python one-line "for" expression

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