Fix import when pandas/pyarrow not installed (#678)

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Author: kylebarron

Diff for: CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [0.10.1] - 2024-10-08
+
+### Fixes :bug:
+
+- Fix import when pandas not installed.
+
 ## [0.10.0] - 2024-10-07
 
 ### New! :sparkles:
@@ -29,7 +35,7 @@
 - Fix reading from DuckDB with only geometry column by @kylebarron in https://github.com/developmentseed/lonboard/pull/625
 - Fix attribution by @vgeorge in https://github.com/developmentseed/lonboard/pull/561
 
-## New Contributors
+### New Contributors
 
 - @MarcSkovMadsen made their first contribution in https://github.com/developmentseed/lonboard/pull/539
 - @ATL2001 made their first contribution in https://github.com/developmentseed/lonboard/pull/655

Diff for: lonboard/types/layer.py

@@ -2,6 +2,7 @@
 
 import sys
 from typing import (
+    TYPE_CHECKING,
     List,
     Literal,
     Sequence,
@@ -10,8 +11,6 @@
 )
 
 import numpy as np
-import pandas as pd
-import pyarrow
 from arro3.core.types import ArrowArrayExportable, ArrowStreamExportable
 from numpy.typing import NDArray
 
@@ -22,6 +21,10 @@
 else:
     from typing_extensions import TypedDict
 
+if TYPE_CHECKING:
+    import pandas as pd
+    import pyarrow
+
 
 IntFloat = Union[int, float]
 Units = Literal["meters", "common", "pixels"]
@@ -32,18 +35,18 @@
     Tuple[int, ...],
     str,
     NDArray[np.uint8],
-    pyarrow.FixedSizeListArray,
-    pyarrow.ChunkedArray,
+    "pyarrow.FixedSizeListArray",
+    "pyarrow.ChunkedArray",
     ArrowArrayExportable,
     ArrowStreamExportable,
 ]
 FloatAccessorInput = Union[
     int,
     float,
     NDArray[np.number],
-    pd.Series,
-    pyarrow.FloatingPointArray,
-    pyarrow.ChunkedArray,
+    "pd.Series",
+    "pyarrow.FloatingPointArray",
+    "pyarrow.ChunkedArray",
     ArrowArrayExportable,
     ArrowStreamExportable,
 ]
@@ -52,18 +55,18 @@
     Tuple[int, int, int],
     Tuple[int, ...],
     NDArray[np.floating],
-    pyarrow.FixedSizeListArray,
-    pyarrow.ChunkedArray,
+    "pyarrow.FixedSizeListArray",
+    "pyarrow.ChunkedArray",
     ArrowArrayExportable,
     ArrowStreamExportable,
 ]
 TextAccessorInput = Union[
     str,
     NDArray[np.str_],
-    pd.Series,
-    pyarrow.StringArray,
-    pyarrow.LargeStringArray,
-    pyarrow.ChunkedArray,
+    "pd.Series",
+    "pyarrow.StringArray",
+    "pyarrow.LargeStringArray",
+    "pyarrow.ChunkedArray",
     ArrowArrayExportable,
     ArrowStreamExportable,
 ]