Regex text file to store data in list

[TheSithSiggi]

Hi all!

I have the following sample text which are Finite Element Analysis results:

The first column are X,Y and z normal stress, XY, YZ and ZX are shear stress and A,B and C are principal stress.

I would like to use Regex to search a file for this pattern (the file is unstructred with only parts of the file on this format, to my knowlege regex is the best option when the overall data is unstructured)

text = '''
X-1.30779E+01    XY-1.26471E+01      A 3.00940E+01
Y 2.63890E+01    YZ 7.83649E-04      B 5.98331E-01      
Z 5.96212E-01    ZX 2.04834E-01      C-1.67851E+01    
 
X-1.53833E+01    XY-4.23500E+00      A 2.50320E+01    
Y 2.45882E+01    YZ-1.64653E-02      B-4.95968E-01
Z-4.96026E-01    ZX 3.55515E-02      C-1.58271E+01   
'''

I have written the following regex:

normalPattern = r'\s[XYZ].\d.\d{5}E.\d{2}\s'

shearPattern = r'(\s(XY|YZ|ZX).\d.\d{5}E.\d{2}\s)'

principalPattern = r'\s[ABC].\d.\d{5}E.\d{2}\s'

reg1 = re.findall(normalPattern,text)
 
reg2 = re.findall(shearPattern,text)

reg3 = re.findall(principalPattern,text)

Which produce the following results:

Output:
reg1
Out[173]: 
['\nX-1.30779E+01 ',
 '\nY 2.63890E+01 ',
 '\nZ 5.96212E-01 ',
 '\nX-1.53833E+01 ',
 '\nY 2.45882E+01 ',
 '\nZ-4.96026E-01 ']

reg2
Out[174]: 
[(' XY-1.26471E+01 ', 'XY'),
 (' YZ 7.83649E-04 ', 'YZ'),
 (' ZX 2.04834E-01 ', 'ZX'),
 (' XY-4.23500E+00 ', 'XY'),
 (' YZ-1.64653E-02 ', 'YZ'),
 (' ZX 3.55515E-02 ', 'ZX')]

reg3
Out[175]: 
[' A 3.00940E+01\n',
 ' B 5.98331E-01 ',
 ' C-1.67851E+01 ',
 ' A 2.50320E+01 ',
 ' B-4.95968E-01\n',
 ' C-1.58271E+01 ']

My question:

1) for Reg1 and Reg3 I get the "\n" in some cases, how can I exclude them?

2) for Reg2 for some reason I get an extra "XY", "YZ" and "ZX" how can I exlude them?

Thank you!

Regards
Siggi