support cryptograph>=3.1 (#1454)

Author: shuoweil

bigframes/blob/_functions.py

@@ -393,7 +393,7 @@ def pdf_extract_func(src_obj_ref_rt: str) -> str:
     return all_text
 
 
-pdf_extract_def = FunctionDef(pdf_extract_func, ["pypdf", "requests"])
+pdf_extract_def = FunctionDef(pdf_extract_func, ["pypdf", "requests", "pypdf[crypto]"])
 
 
 # Extracts text from a PDF url and chunks it simultaneously
@@ -438,4 +438,4 @@ def pdf_chunk_func(src_obj_ref_rt: str, chunk_size: int, overlap_size: int) -> s
     return all_text_json_string
 
 
-pdf_chunk_def = FunctionDef(pdf_chunk_func, ["pypdf", "requests"])
+pdf_chunk_def = FunctionDef(pdf_chunk_func, ["pypdf", "requests", "pypdf[crypto]"])

bigframes/operations/blob.py

@@ -553,8 +553,7 @@ def pdf_extract(
         container_cpu: Union[float, int] = 0.33,
         container_memory: str = "512Mi",
     ) -> bigframes.series.Series:
-        """Extracts and chunks text from PDF URLs and saves the text as
-           arrays of string.
+        """Extracts text from PDF URLs and saves the text as string.
 
         .. note::
             BigFrames Blob is still under experiments. It may not work and