adding upgrade for pandas deprecation warning, adding pyarrow>=0.17.0…

… at minimum requirement as defined in dev requirements for pandas==1.3.0 version

requirements.txt

@@ -9,3 +9,4 @@ frozendict>=2.3.4
 beautifulsoup4>=4.11.1
 html5lib>=1.1
 peewee>=3.16.2
+pyarrow>=0.17.0

requirements_dev.txt

@@ -0,0 +1,7 @@
+pytest
+requests-cache
+requests-ratelimiter
+scipy
+appdirs
+scipy>=1.2
+

tests/utils.py

@@ -8,6 +8,8 @@
    python -m unittest tests.utils.TestTicker
 
 """
+from unittest import TestSuite
+
 # import pandas as pd
 # import numpy as np
 
@@ -34,16 +36,16 @@ def test_storeTzNoRaise(self):
         tkr = 'AMZN'
         tz1 = "America/New_York"
         tz2 = "London/Europe"
-        cache = yf.utils.get_tz_cache()
+        cache = yf.cache.get_tz_cache()
         cache.store(tkr, tz1)
         cache.store(tkr, tz2)
 
     def test_setTzCacheLocation(self):
-        self.assertEqual(yf.utils._DBManager.get_location(), self.tempCacheDir.name)
+        self.assertEqual(yf.cache._TzDBManager.get_location(), self.tempCacheDir.name)
 
         tkr = 'AMZN'
         tz1 = "America/New_York"
-        cache = yf.utils.get_tz_cache()
+        cache = yf.cache.get_tz_cache()
         cache.store(tkr, tz1)
 
         self.assertTrue(os.path.exists(os.path.join(self.tempCacheDir.name, "tkr-tz.db")))
@@ -60,30 +62,30 @@ def test_tzCacheRootStore(self):
         tz1 = "America/New_York"
 
         # During attempt to store, will discover cannot write
-        yf.utils.get_tz_cache().store(tkr, tz1)
+        yf.cache.get_tz_cache().store(tkr, tz1)
 
         # Handling the store failure replaces cache with a dummy
-        cache = yf.utils.get_tz_cache()
+        cache = yf.cache.get_tz_cache()
         self.assertTrue(cache.dummy)
         cache.store(tkr, tz1)
 
     def test_tzCacheRootLookup(self):
         # Test that if cache path in read-only filesystem, no exception.
         tkr = 'AMZN'
         # During attempt to lookup, will discover cannot write
-        yf.utils.get_tz_cache().lookup(tkr)
+        yf.cache.get_tz_cache().lookup(tkr)
 
         # Handling the lookup failure replaces cache with a dummy
-        cache = yf.utils.get_tz_cache()
+        cache = yf.cache.get_tz_cache()
         self.assertTrue(cache.dummy)
         cache.lookup(tkr)
 
 
 def suite():
-    suite = unittest.TestSuite()
-    suite.addTest(TestCache('Test cache'))
-    suite.addTest(TestCacheNoPermission('Test cache no permission'))
-    return suite
+    ts: TestSuite = unittest.TestSuite()
+    ts.addTest(TestCache('Test cache'))
+    ts.addTest(TestCacheNoPermission('Test cache no permission'))
+    return ts
 
 
 if __name__ == '__main__':

yfinance/utils.py

@@ -772,7 +772,7 @@ def fix_Yahoo_dst_issue(df, interval):
         f_pre_midnight = (df.index.minute == 0) & (df.index.hour.isin([22, 23]))
         dst_error_hours = _np.array([0] * df.shape[0])
         dst_error_hours[f_pre_midnight] = 24 - df.index[f_pre_midnight].hour
-        df.index += _pd.TimedeltaIndex(dst_error_hours, 'h')
+        df.index += _pd.to_timedelta(dst_error_hours, 'h')
     return df