dijkstra.py: Use r"strings" to fix two pylint warnings (#1052)

```
=============================== warnings summary ===============================
graphs/dijkstra.py:81
  /home/travis/build/TheAlgorithms/Python/graphs/dijkstra.py:81: DeprecationWarning: invalid escape sequence \ 
    """
graphs/dijkstra.py:97
  /home/travis/build/TheAlgorithms/Python/graphs/dijkstra.py:97: DeprecationWarning: invalid escape sequence \ 
    """
-- Docs: https://docs.pytest.org/en/latest/warnings.html
=================== 126 passed, 7 warnings in 19.35 seconds ====================
```
This commit is contained in:
Christian Clauss 2019-07-20 18:31:08 +02:00 committed by John Law
parent 5b5beb61d6
commit 0f09530707

View File

@ -71,7 +71,7 @@ G = {
"F": [["C", 3], ["E", 3]],
}
"""
r"""
Layout of G2:
E -- 1 --> B -- 1 --> C -- 1 --> D -- 1 --> F
@ -87,7 +87,7 @@ G2 = {
"F": [],
}
"""
r"""
Layout of G3:
E -- 1 --> B -- 1 --> C -- 1 --> D -- 1 --> F