Graph-Line format bug

[sepandhaghighi]

Description

Graph-Line format empty line should be removed

Steps/Code to Reproduce

>>> file=open('testfile.gl','r')
>>> print(file.read())

Expected Behavior

1 2:92
2 5:-155
3 10:148
4 7:-185
5 9:-128
6 1:93 9:-97
7 3:60
8 4:-44
10 10:114

Actual Behavior

1 2:92
2 5:-155
3 10:148
4 7:-185
5 9:-128
6 1:93 9:-97
7 3:60
8 4:-44
9
10 10:114

Operating System

Windows 10

Python Version

3.5.2

Pyrgg Version

0.8