DOC: Fix typos

closes pandas-dev#12692

Author: homiziado

pandas/core/frame.py

@@ -3624,7 +3624,7 @@ def combine(self, other, func, fill_value=None, overwrite=True):
             other_mask = isnull(otherSeries)
 
             # don't overwrite columns unecessarily
-            # DO propogate if this column is not in the intersection
+            # DO propagate if this column is not in the intersection
             if not overwrite and other_mask.all():
                 result[col] = this[col].copy()
                 continue

pandas/core/internals.py

@@ -158,7 +158,7 @@ def array_dtype(self):
 
     def make_block(self, values, placement=None, ndim=None, **kwargs):
         """
-        Create a new block, with type inference propogate any values that are
+        Create a new block, with type inference propagate any values that are
         not specified
         """
         if placement is None:

pandas/io/stata.py

@@ -1933,7 +1933,7 @@ def _check_column_names(self, data):
             * Variables with names that are too long
 
         When an illegal variable name is detected, it is converted, and if
-        dates are exported, the variable name is propogated to the date
+        dates are exported, the variable name is propagated to the date
         conversion dictionary
         """
         converted_names = []

pandas/tseries/index.py

@@ -1126,7 +1126,7 @@ def _can_fast_union(self, other):
             return (right_start == left_end + offset) or right_start in left
         except (ValueError):
 
-            # if we are comparing an offset that does not propogate timezones
+            # if we are comparing an offset that does not propagate timezones
             # this will raise
             return False
 

pandas/tseries/tests/test_resample.py

@@ -2029,7 +2029,7 @@ def test_resample_tz_localized(self):
         assert_series_equal(result, expected)
 
         # GH 6397
-        # comparing an offset that doesn't propogate tz's
+        # comparing an offset that doesn't propagate tz's
         rng = date_range('1/1/2011', periods=20000, freq='H')
         rng = rng.tz_localize('EST')
         ts = DataFrame(index=rng)