update

dataprofiler/__init__.py

@@ -1,6 +1,4 @@
 """Package for dataprofiler."""
-import snappy
-
 from . import settings
 from .data_readers.data import Data
 from .dp_logging import get_logger, set_verbosity
@@ -22,6 +20,22 @@
 from .validators.base_validators import Validator
 from .version import __version__
 
+try:
+    import snappy
+except ImportError:
+    import warnings
+
+    warnings.warn(
+        "Snappy must be installed to use parquet/avro datasets."
+        "\n\n"
+        "For macOS use Homebrew:\n"
+        "\t`brew install snappy`"
+        "\n\n"
+        "For linux use apt-get:\n`"
+        "\tsudo apt-get -y install libsnappy-dev`\n",
+        ImportWarning,
+    )
+
 
 def set_seed(seed=None):
     # also check it's an integer