examples: fixed read_ptrac

Author: BitterB0NG0

examples/read_ptrac.py

@@ -13,6 +13,31 @@
 print(ptrac)
 
 # Reading PTRAC using ``from_mcnp``.
-ptrac = pymcnp.Ptrac.from_mcnp("""""")
+ptrac = pymcnp.Ptrac.from_mcnp("""   -1
+mcnp    6                        05/08/13 07/14/25 11:39:04 
+Sample Problem Input Deck                                                       
+   1.4000E+01  1.0000E+00  1.0000E+02  0.0000E+00  0.0000E+00  1.0000E+00  1.0000E+00  0.0000E+00  1.0000E+00  1.0000E+04
+   0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  1.0000E+00  1.0000E+00  0.0000E+00  0.0000E+00
+     2    5    3    6    3    6    3    6    3    6    3    1    4    0    0    0    0    0    0    0
+    1   2   7   8   9  17  18  20  21  22   7   8  10  11  17  18  20  21  22   7   8  12  13  17  18  20  21  22   7   8
+   10  11  17  18  20  21  22   7   8  14  15  17  18  20  21  22
+          1      1000
+       3000         1        40         1         1
+   0.00000E+00 -0.40000E+01 -0.25000E+01
+       4000         2         7         0         3         3
+   0.25424E+00 -0.37634E+01 -0.21403E+01
+       4000         2      6000        51         3         3
+   0.14362E+01 -0.26632E+01 -0.46819E+00
+       4000         2      6000         2         3         3
+   0.13310E+01 -0.10442E+01  0.70227E-02
+       3000         2      6000         2         3         3
+   0.34660E+01 -0.27738E+01  0.17002E+00
+       5000         3         5        55         4         0
+   0.50000E+01 -0.45169E+01  0.15231E+01
+       9000         3         1         1         4         0
+   0.50000E+01 -0.45169E+01  0.15231E+01
+       9000         1        40         1         1
+   0.00000E+00 -0.40000E+01 -0.25000E+01
+""")
 
 print(ptrac)