donopj2 - 5 months ago 80
Python Question

# Suppress Scientific Notation in Numpy When Creating Array From Nested List

I have a nested list that looks like the following:

``````my_list = [[3.74, 5162, 13683628846.64, 12783387559.86, 1.81],
[9.55, 116, 189688622.37, 260332262.0, 1.97],
[2.2, 768, 6004865.13, 5759960.98, 1.21],
[3.74, 4062, 3263822121.39, 3066869087.9, 1.93],
[1.91, 474, 44555062.72, 44555062.72, 0.41],
[5.8, 5006, 8254968918.1, 7446788272.74, 3.25],
[4.5, 7887, 30078971595.46, 27814989471.31, 2.18],
[7.03, 116, 66252511.46, 81109291.0, 1.56],
[6.52, 116, 47674230.76, 57686991.0, 1.43],
[1.85, 623, 3002631.96, 2899484.08, 0.64],
[13.76, 1227, 1737874137.5, 1446511574.32, 4.32],
[13.76, 1227, 1737874137.5, 1446511574.32, 4.32]]
``````

I then import Numpy, and set print options to
`(suppress=True)`
. When I create an array:

``````my_array = numpy.array(my_list)
``````

I can't for the life of me suppress scientific notation:

``````[[  3.74000000e+00   5.16200000e+03   1.36836288e+10   1.27833876e+10
1.81000000e+00]
[  9.55000000e+00   1.16000000e+02   1.89688622e+08   2.60332262e+08
1.97000000e+00]
[  2.20000000e+00   7.68000000e+02   6.00486513e+06   5.75996098e+06
1.21000000e+00]
[  3.74000000e+00   4.06200000e+03   3.26382212e+09   3.06686909e+09
1.93000000e+00]
[  1.91000000e+00   4.74000000e+02   4.45550627e+07   4.45550627e+07
4.10000000e-01]
[  5.80000000e+00   5.00600000e+03   8.25496892e+09   7.44678827e+09
3.25000000e+00]
[  4.50000000e+00   7.88700000e+03   3.00789716e+10   2.78149895e+10
2.18000000e+00]
[  7.03000000e+00   1.16000000e+02   6.62525115e+07   8.11092910e+07
1.56000000e+00]
[  6.52000000e+00   1.16000000e+02   4.76742308e+07   5.76869910e+07
1.43000000e+00]
[  1.85000000e+00   6.23000000e+02   3.00263196e+06   2.89948408e+06
6.40000000e-01]
[  1.37600000e+01   1.22700000e+03   1.73787414e+09   1.44651157e+09
4.32000000e+00]
[  1.37600000e+01   1.22700000e+03   1.73787414e+09   1.44651157e+09
4.32000000e+00]]
``````

If i create a simple array directly:

``````new_array = numpy.array([1.5, 4.65, 7.845])
``````

I have no problem and it prints as follows:

``````[ 1.5    4.65   7.845]
``````

Does anyone know what my problem is?

I guess what you need is `np.set_printoptions(suppress=True)`, for details see here: http://pythonquirks.blogspot.fr/2009/10/controlling-printing-in-numpy.html