Three dots (...) when I print a list of lists in Python

Asked Jul 27 '13 at 16:17

Active Jul 27 '13 at 16:22

Viewed 985 times

I created a list of arrays with lots of data, for example:

[[233,443423,2554,4534,453245,254554,......], [343,6564,453,356,45645,........],....]

(approximately 1 million lists each containing 13 elements)

The problem is, when I try to print this list of lists it prints only 6 lists and only 6 elements from each list, with three dots in between the lists and between the elements.

Why does this happen?

edited Jul 27 '13 at 16:22

Martijn Pieters

1,048,767
296
4,058
3,343

asked Jul 27 '13 at 16:17

user2578185

Are these `numpy` arrays? Or standard Python lists? – Martijn Pieters Jul 27 '13 at 16:20
these are numpy arrays – user2578185 Jul 27 '13 at 16:21
Use `str.join()` explicitly if you don't mind the memory use. Otherwise it's probably better to just print them piece-by-piece yourself. Alternately, try `pprint`, maybe that doesn't attempt to buffer the output in memory first. (Maybe.) – millimoose Jul 27 '13 at 16:21
1

@millimoose: No, this is a NumPy feature, see the proposed dupe. – Martijn Pieters Jul 27 '13 at 16:23
thank you Martijn Pieters, it now works fine! – user2578185 Jul 27 '13 at 16:29

Three dots (...) when I print a list of lists in Python

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