Add `yapf` formatter (#196)

<!--

To expedite the pull request process, please see the contributor guide
for my projects:

  <https://github.com/raxod502/contributor-guide>

-->

2 files changed, 34 insertions, 0 deletions

diff --git a/test/formatters/samplecode/yapf/in.py b/test/formatters/samplecode/yapf/in.py
new file mode 100644
index 0000000..4a561a2
--- /dev/null
+++ b/test/formatters/samplecode/yapf/in.py
@@ -0,0 +1,16 @@
+import sys
+
+import os
+
+
+import path
+
+def the_solution(a, b:int , c:bool=True) ->   bool:
+    print(a+  b)
+
+
+
+    return True
+
+if  __name__  ==  "__main__" :
+    the_solution(1, 2, )
diff --git a/test/formatters/samplecode/yapf/out.py b/test/formatters/samplecode/yapf/out.py
new file mode 100644
index 0000000..a90652d
--- /dev/null
+++ b/test/formatters/samplecode/yapf/out.py
@@ -0,0 +1,18 @@
+import sys
+
+import os
+
+import path
+
+
+def the_solution(a, b: int, c: bool = True) -> bool:
+    print(a + b)
+
+    return True
+
+
+if __name__ == "__main__":
+    the_solution(
+        1,
+        2,
+    )