Counting number of columns in text file with Python -

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i have 2 text files composed of spaced-separated columns. these excerpts of these 2 files:

filea

 1 1742.420   -0.410  20.1530   0.4190   1.7080   0.5940  2 1872.060    0.070  21.4710   0.2950   0.0670   0.3380  3 1918.150    0.150  18.9220   0.0490   1.4240   0.1150  4 1265.760    0.170  19.0850   0.0720   1.3330   0.1450  5  308.880    0.220  20.5020   0.1570   0.0200   0.1720  ....

fileb

 1 1198.367    6.465  15.684 0.015  3.119 0.140  1  2 1451.023    6.722  17.896 0.031  0.171 0.041  1  3 1032.364    6.788  18.895 0.074 -0.084 0.088  1  4  984.509    7.342  19.938 0.171  0.043 0.322  1  5 1068.536    7.369  19.182 0.091  0.486 0.143  1  ....

as can see filea has 7 columns , fileb has 8. code use count columns:

import csv file = 'filename' reader = csv.reader(file) num_cols = 0 col in reader:     num_cols = num_cols + 1

this little code correctly gives number of columns filea (7) not fileb (also gives 7) what's going on , how can fix it?

if i'm counting rows instead of columns then: 1- how can count columns? , 2- given actual files have several thousands of lines/rows, why getting these results (7)?

import csv  open('filename') f:     reader = csv.reader(f, delimiter=' ', skipinitialspace=true)     first_row = next(reader)     num_cols = len(first_row)

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