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-rw-r--r--src/ee/kicad/__init__.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/ee/kicad/__init__.py b/src/ee/kicad/__init__.py
index d89c209..b51e7db 100644
--- a/src/ee/kicad/__init__.py
+++ b/src/ee/kicad/__init__.py
@@ -31,7 +31,11 @@ def to_pandas(obj: Any, **kwarg):
def to_pandas_schematics(ss: Schematics):
dfs = [to_pandas_schematic(schematic) for schematic in ss.schematics]
- return pandas.concat(dfs)
+ df = pandas.concat(dfs). \
+ sort_values(["ref_type", "ref_num"]). \
+ applymap(lambda s: s if isinstance(s, str) else None)
+
+ return df
def to_pandas_schematic(sch: Schematic):
# These fields will always be put first.