CODEWITHSUNDEEP
pythonpython-2.7python-3.x
Silpa Jayaprakash
Silpa Jayaprakash

Reputation: 11

Python Tabulate

How can I merge multiple tables in python using tabulate package?

append is not working when concatenating the two tables in python.The tables are implemented using tabulate package in python.

table_1 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]]
table_2 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]]
table_3 = table_1.append(table_2)
print table_3

Upvotes: 1

Views: 2294

Answers (3)

Remyakrishnan P R
Remyakrishnan P R

Reputation: 1

You can apply append because the values will be in list format..........

table_1 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]] table_2 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]] table_1.extend(table_2) print table_1

Upvotes: 0

WeaselFox
WeaselFox

Reputation: 7380

For " concatenating the two tables" you probably want list.extend, not append. Append will insert the second list as a single item to the first one. Also note that extend will modify the source list in-place and return None:

>>> table_1 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]]
>>> table_2 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]]
>>> table_3 = table_1.extend(table_2)
>>> print table_3
None

table_3 is now None, while table_1 was extended:

>>> print table_1
[['Value_1', 1, 2], ['Value_2', 2, 4], ['Value_3', 2, 3], ['Value_1', 1, 2], ['Value_2', 2, 4], ['Value_3', 2, 3]]

Upvotes: 3

zhangxaochen
zhangxaochen

Reputation: 34027

list.append or extend mutates the list inplace and returns None, so here your table_3 gets None in it. You can use + to add concatenate two lists:

In [251]: table_1 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]]
     ...: table_2 = [["Value_1",1,2],["Value_2",2,4],["Value_3",2,3]]
     ...: table_3 = table_1 + table_2
     ...: print table_3
[['Value_1', 1, 2], ['Value_2', 2, 4], ['Value_3', 2, 3], ['Value_1', 1, 2], ['Value_2', 2, 4], ['Value_3', 2, 3]]

Upvotes: 1

Related Questions