diff --git a/test_yfinance.py b/test_yfinance.py
index b1e099d..765ef9c 100644
--- a/test_yfinance.py
+++ b/test_yfinance.py
@@ -15,6 +15,9 @@ Sanity check for most common library uses all working
 
 import yfinance as yf
 import unittest
+import logging
+
+logging.basicConfig(level=logging.DEBUG)
 
 symbols = ['MSFT', 'IWO', 'VFINX', '^GSPC', 'BTC-USD']
 tickers = [yf.Ticker(symbol) for symbol in symbols]
diff --git a/yfinance/base.py b/yfinance/base.py
index ac16515..7135d23 100644
--- a/yfinance/base.py
+++ b/yfinance/base.py
@@ -21,6 +21,7 @@
 
 from __future__ import print_function
 
+import logging
 import time as _time
 import datetime as _datetime
 import dateutil as _dateutil
@@ -47,6 +48,7 @@ _BASE_URL_ = 'https://query2.finance.yahoo.com'
 _SCRAPE_URL_ = 'https://finance.yahoo.com/quote'
 _ROOT_URL_ = 'https://finance.yahoo.com'
 
+logger = logging.getLogger(__name__)
 
 class FastInfo:
     # Contain small subset of info[] items that can be fetched faster elsewhere.
@@ -899,7 +901,7 @@ class TickerBase:
             sub_interval = nexts[interval]
             td_range = itds[interval]
         else:
-            print("WARNING: Have not implemented repair for '{}' interval. Contact developers".format(interval))
+            logger.critical("Have not implemented repair for '%s' interval. Contact developers", interval)
             raise Exception("why here")
             return df
 
@@ -1035,7 +1037,7 @@ class TickerBase:
             df_fine = self.history(start=fetch_start, end=fetch_end, interval=sub_interval, auto_adjust=False, actions=False, prepost=prepost, repair=r, keepna=True)
             if df_fine is None or df_fine.empty:
                 if not silent:
-                    print("YF: WARNING: Cannot reconstruct because Yahoo not returning data in interval")
+                    logger.warning("Cannot reconstruct because Yahoo not returning data in interval")
                 continue
             # Discard the buffer
             df_fine = df_fine.loc[g[0] : g[-1]+itds[sub_interval]-_datetime.timedelta(milliseconds=1)]
@@ -1273,7 +1275,7 @@ class TickerBase:
             if n_fixed_crudely > 0:
                 report_msg += f"({n_fixed_crudely} crudely) "
             report_msg += f"in {interval} price data"
-            print(report_msg)
+            logger.info('%s', report_msg)
 
         # Restore original values where repair failed
         f = df2_tagged
@@ -1366,7 +1368,7 @@ class TickerBase:
             if n_fixed < 4:
                 dts_repaired = sorted(list(set(dts_tagged).difference(dts_not_repaired)))
                 msg += f": {dts_repaired}"
-            print(msg)
+            logger.info('%s', msg)
 
         if df2_reserve is not None:
             df3 = _pd.concat([df3, df2_reserve]).sort_index()
@@ -1729,7 +1731,7 @@ class TickerBase:
         if start is None:
             start = end - _pd.Timedelta(days=548)  # 18 months
         if start >= end:
-            print("ERROR: start date must be before end")
+            logger.error("Start date must be before end")
             return None
         start = start.floor("D")
         end = end.ceil("D")
@@ -1741,14 +1743,14 @@ class TickerBase:
             json_str = self._data.cache_get(shares_url).text
             json_data = _json.loads(json_str)
         except:
-            print(f"{self.ticker}: Yahoo web request for share count failed")
+            logger.error("%s: Yahoo web request for share count failed", self.ticker)
             return None
         try:
             fail = json_data["finance"]["error"]["code"] == "Bad Request"
         except:
             fail = False
         if fail:
-            print(f"{self.ticker}: Yahoo web request for share count failed")
+            logger.error(f"%s: Yahoo web request for share count failed", self.ticker)
             return None
 
         shares_data = json_data["timeseries"]["result"]
@@ -1757,7 +1759,7 @@ class TickerBase:
         try:
             df = _pd.Series(shares_data[0]["shares_out"], index=_pd.to_datetime(shares_data[0]["timestamp"], unit="s"))
         except Exception as e:
-            print(f"{self.ticker}: Failed to parse shares count data: "+str(e))
+            logger.error(f"%s: Failed to parse shares count data: %s", self.ticker, e)
             return None
 
         df.index = df.index.tz_localize(tz)
@@ -1872,7 +1874,7 @@ class TickerBase:
 
         if dates is None or dates.shape[0] == 0:
             err_msg = "No earnings dates found, symbol may be delisted"
-            print('- %s: %s' % (self.ticker, err_msg))
+            logger.error('%s: %s', self.ticker, err_msg)
             return None
         dates = dates.reset_index(drop=True)
 
diff --git a/yfinance/data.py b/yfinance/data.py
index 5807b77..d9c8c35 100644
--- a/yfinance/data.py
+++ b/yfinance/data.py
@@ -1,6 +1,7 @@
 import functools
 from functools import lru_cache
 
+import logging
 import hashlib
 from base64 import b64decode
 usePycryptodome = False  # slightly faster
@@ -25,6 +26,8 @@ except ImportError:
 
 cache_maxsize = 64
 
+logger = logging.getLogger(__name__)
+
 
 def lru_cache_freezeargs(func):
     """
@@ -294,7 +297,7 @@ class TickerData:
             msg = "No decryption keys could be extracted from JS file."
             if "requests_cache" in str(type(response)):
                 msg += " Try flushing your 'requests_cache', probably parsing old JS."
-            print("WARNING: " + msg + " Falling back to backup decrypt methods.")
+            logger.warning("WARNING: %s Falling back to backup decrypt methods.", msg)
         if len(keys) == 0:
             keys = []
             try:
diff --git a/yfinance/multi.py b/yfinance/multi.py
index a62f4e8..955bbb6 100644
--- a/yfinance/multi.py
+++ b/yfinance/multi.py
@@ -21,6 +21,7 @@
 
 from __future__ import print_function
 
+import logging
 import time as _time
 import multitasking as _multitasking
 import pandas as _pd
@@ -28,6 +29,7 @@ import pandas as _pd
 from . import Ticker, utils
 from . import shared
 
+logger = logging.getLogger(__name__)
 
 def download(tickers, start=None, end=None, actions=False, threads=True, ignore_tz=None,
              group_by='column', auto_adjust=False, back_adjust=False, repair=False, keepna=False,
@@ -144,12 +146,16 @@ def download(tickers, start=None, end=None, actions=False, threads=True, ignore_
     if progress:
         shared._PROGRESS_BAR.completed()
 
-    if shared._ERRORS and show_errors:
-        print('\n%.f Failed download%s:' % (
-            len(shared._ERRORS), 's' if len(shared._ERRORS) > 1 else ''))
-        # print(shared._ERRORS)
-        print("\n".join(['- %s: %s' %
-                         v for v in list(shared._ERRORS.items())]))
+    if shared._ERRORS:
+        if show_errors:
+            print('\n%.f Failed download%s:' % (
+                len(shared._ERRORS), 's' if len(shared._ERRORS) > 1 else ''))
+            # print(shared._ERRORS)
+            print("\n".join(['- %s: %s' %
+                             v for v in list(shared._ERRORS.items())]))
+        else:
+            logger.error('%d failed downloads: %s',
+                         len(shared._ERRORS), shared._ERRORS)
 
     if ignore_tz:
         for tkr in shared._DFS.keys():
diff --git a/yfinance/scrapers/analysis.py b/yfinance/scrapers/analysis.py
index e381b01..7166742 100644
--- a/yfinance/scrapers/analysis.py
+++ b/yfinance/scrapers/analysis.py
@@ -58,7 +58,7 @@ class Analysis:
             analysis_data = analysis_data['QuoteSummaryStore']
         except KeyError as e:
             err_msg = "No analysis data found, symbol may be delisted"
-            print('- %s: %s' % (self._data.ticker, err_msg))
+            logger.error('%s: %s', self._data.ticker, err_msg)
             return
 
         if isinstance(analysis_data.get('earningsTrend'), dict):
diff --git a/yfinance/scrapers/fundamentals.py b/yfinance/scrapers/fundamentals.py
index 2530e4c..379b10b 100644
--- a/yfinance/scrapers/fundamentals.py
+++ b/yfinance/scrapers/fundamentals.py
@@ -1,4 +1,5 @@
 import datetime
+import logging
 import json
 
 import pandas as pd
@@ -8,6 +9,7 @@ from yfinance import utils
 from yfinance.data import TickerData
 from yfinance.exceptions import YFinanceDataException, YFinanceException
 
+logger = logging.getLogger(__name__)
 
 class Fundamentals:
 
@@ -50,7 +52,7 @@ class Fundamentals:
             self._fin_data_quote = self._financials_data['QuoteSummaryStore']
         except KeyError:
             err_msg = "No financials data found, symbol may be delisted"
-            print('- %s: %s' % (self._data.ticker, err_msg))
+            logger.error('%s: %s', self._data.ticker, err_msg)
             return None
 
     def _scrape_earnings(self, proxy):
@@ -144,7 +146,7 @@ class Financials:
             if statement is not None:
                 return statement
         except YFinanceException as e:
-            print(f"- {self._data.ticker}: Failed to create {name} financials table for reason: {repr(e)}")
+            logger.error("%s: Failed to create %s financials table for reason: %r", self._data.ticker, name, e)
         return pd.DataFrame()
 
     def _create_financials_table(self, name, timescale, proxy):
@@ -267,7 +269,7 @@ class Financials:
             if statement is not None:
                 return statement
         except YFinanceException as e:
-            print(f"- {self._data.ticker}: Failed to create financials table for {name} reason: {repr(e)}")
+            logger.error("%s: Failed to create financials table for %s reason: %r", self._data.ticker, name, e)
         return pd.DataFrame()
 
     def _create_financials_table_old(self, name, timescale, proxy):
diff --git a/yfinance/scrapers/quote.py b/yfinance/scrapers/quote.py
index 54bd409..43dbae0 100644
--- a/yfinance/scrapers/quote.py
+++ b/yfinance/scrapers/quote.py
@@ -1,4 +1,5 @@
 import datetime
+import logging
 import json
 
 import pandas as pd
@@ -6,6 +7,7 @@ import pandas as pd
 from yfinance import utils
 from yfinance.data import TickerData
 
+logger = logging.getLogger(__name__)
 
 info_retired_keys_price = {"currentPrice", "dayHigh", "dayLow", "open", "previousClose", "volume", "volume24Hr"}
 info_retired_keys_price.update({"regularMarket"+s for s in ["DayHigh", "DayLow", "Open", "PreviousClose", "Price", "Volume"]})
@@ -126,7 +128,7 @@ class Quote:
             quote_summary_store = json_data['QuoteSummaryStore']
         except KeyError:
             err_msg = "No summary info found, symbol may be delisted"
-            print('- %s: %s' % (self._data.ticker, err_msg))
+            logger.error('%s: %s', self._data.ticker, err_msg)
             return None
 
         # sustainability
diff --git a/yfinance/utils.py b/yfinance/utils.py
index 85be2d2..91e0c47 100644
--- a/yfinance/utils.py
+++ b/yfinance/utils.py
@@ -936,9 +936,10 @@ def get_tz_cache():
             try:
                 _tz_cache = _TzCache()
             except _TzCacheException as err:
-                print("Failed to create TzCache, reason: {}".format(err))
-                print("TzCache will not be used.")
-                print("Tip: You can direct cache to use a different location with 'set_tz_cache_location(mylocation)'")
+                logger.error("Failed to create TzCache, reason: %s. "
+                             "TzCache will not be used. "
+                             "Tip: You can direct cache to use a different location with 'set_tz_cache_location(mylocation)'",
+                             err)
                 _tz_cache = _TzCacheDummy()
 
         return _tz_cache