使用Python 2.7读取文本文件中特定行和列的数据

Question

I am new to Python and need to extract data from a text file. I have a text file below:

UNHOLTZ-DICKIE CORPORATION
CALIBRATION DATA
789     3456
222     455
333     5
344     67788
12      6789
2456    56656

And I want to read it on the shell as two columns of data only:

789     3456
222     455
333     5
344     67788
12      6789
2456    56656

Answer 1

Here's a Python program that reads a file and outputs the 3rd... lines (drops the first 2 lines). That's all I can deduce that you want given your short explanation.

# read the whole file
file = open("input.file", 'r')
lines = file.readlines()
file.close()

# Skip first 2 lines, output the rest to stdout
count = 0
for line in lines:
    count +=1
    if count > 2:
         print line,

Answer 2

If you have numpy installed then this is a one-liner:

   col1,col2 = numpy.genfromtxt("myfile.txt",skiprows=2,unpack=True)

where myfile.txt is your data file.