Fix pythoneval tests

Author: cdce8p

test-data/unit/pythoneval.test

@@ -283,7 +283,7 @@ f.write('x')
 f.write(b'x')
 f.foobar()
 [out]
-_program.py:3: error: Argument 1 to "write" of "TextIOBase" has incompatible type "bytes"; expected "str"
+_program.py:3: error: Argument 1 to "write" of "_TextIOBase" has incompatible type "bytes"; expected "str"
 _program.py:4: error: "TextIOWrapper[_WrappedBuffer]" has no attribute "foobar"
 
 [case testOpenReturnTypeInference]
@@ -293,9 +293,9 @@ reveal_type(open('x', 'rb'))
 mode = 'rb'
 reveal_type(open('x', mode))
 [out]
-_program.py:1: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
-_program.py:2: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
-_program.py:3: note: Revealed type is "io.BufferedReader"
+_program.py:1: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
+_program.py:2: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
+_program.py:3: note: Revealed type is "_io.BufferedReader"
 _program.py:5: note: Revealed type is "typing.IO[Any]"
 
 [case testOpenReturnTypeInferenceSpecialCases]
@@ -304,8 +304,8 @@ reveal_type(open(file='x', mode='rb'))
 mode = 'rb'
 reveal_type(open(mode=mode, file='r'))
 [out]
-_testOpenReturnTypeInferenceSpecialCases.py:1: note: Revealed type is "io.BufferedReader"
-_testOpenReturnTypeInferenceSpecialCases.py:2: note: Revealed type is "io.BufferedReader"
+_testOpenReturnTypeInferenceSpecialCases.py:1: note: Revealed type is "_io.BufferedReader"
+_testOpenReturnTypeInferenceSpecialCases.py:2: note: Revealed type is "_io.BufferedReader"
 _testOpenReturnTypeInferenceSpecialCases.py:4: note: Revealed type is "typing.IO[Any]"
 
 [case testPathOpenReturnTypeInference]
@@ -317,9 +317,9 @@ reveal_type(p.open('rb'))
 mode = 'rb'
 reveal_type(p.open(mode))
 [out]
-_program.py:3: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
-_program.py:4: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
-_program.py:5: note: Revealed type is "io.BufferedReader"
+_program.py:3: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
+_program.py:4: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
+_program.py:5: note: Revealed type is "_io.BufferedReader"
 _program.py:7: note: Revealed type is "typing.IO[Any]"
 
 [case testPathOpenReturnTypeInferenceSpecialCases]
@@ -330,8 +330,8 @@ reveal_type(p.open(errors='replace', mode='r'))
 mode = 'r'
 reveal_type(p.open(mode=mode, errors='replace'))
 [out]
-_program.py:3: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
-_program.py:4: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
+_program.py:3: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
+_program.py:4: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
 _program.py:6: note: Revealed type is "typing.IO[Any]"
 
 [case testGenericPatterns]