The file is already closed (when the previous with block finishes), so you cannot do anything more to the file. To reopen the file, create another with statement and use the read attribute to read the file.
with open('test_output.txt', 'r') as f2:
data = f2.read()
print(data)
Python Morsels
pythonmorsels.com › TextIOWrapper
TextIOWrapper‽ converting files to strings in Python - Python Morsels
February 5, 2024 - Python's _io.TextIOWrapper object is the usual file object type you'll see because that's the one you get back when working with files in text mode (which allows us to read strings from a file rather than raw bytes).
TypeError: '_io.TextIOWrapper'
Opening a file creates a file object, or more specifically a _io.TextIOWrapper object, it doesn't magically create a dictionary as most files aren't dictionaries. You'll need to parse your file in some way to create a dictionary. I'd suggest saving your file as a JSON file and using the builtin json module. More on reddit.com
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November 28, 2022open() returns IO[str] instead of io.TextIOWrapper
Hello, My env is Win7P+SP1 x64, Py 3.5.2 32b, Mypy 0.501. I opened this issue (#3286) in mypy, but GVR told me to open it here because it was a "(complex) typeshed issue". The var used in the with ... More on github.com
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May 1, 2017Change class from '_io.TextIOWrapper' to 'bytes'
Hello Pythonic minds, I have an text file named “ex23_RawBytes_ConvertedToBytes.txt” These are just text with class ‘_io.TextIOWrapper’ when I checked type in python Any way I can convert them into bytes? The reason I am doing this is that I have all the raw bytes in text but their ... More on discuss.python.org
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February 5, 2024python - how to understand <class '_io.TextIOWrapper'>? - Stack Overflow
12 Subclassing file by subclassing `io.TextIOWrapper` — but what signature does its constructor have? 3 How do I fix Python io.TextIOWrapper error message? More on stackoverflow.com
ProgramCreek
programcreek.com › python › example › 5779 › io.TextIOWrapper
Python Examples of io.TextIOWrapper
def __init__(self, stream, encoding, errors, force_readable=False, force_writable=False, **extra): self._stream = stream = _FixupStream(stream, force_readable, force_writable) io.TextIOWrapper.__init__(self, stream, encoding, errors, **extra) # The io module is a place where the Python 3 text behavior # was forced upon Python 2, so we need to unbreak # it to look like Python 2.
Reddit
reddit.com › r/learnpython › typeerror: '_io.textiowrapper'
r/learnpython on Reddit: TypeError: '_io.TextIOWrapper'
November 28, 2022 -
I'm supposed to create a dictionary from the values in a file and search for 'Polly' and remove it if it's in the file,
I kept getting errors so I'm just trying to get it to print the value just so I can see what I'm doing wrong and even at the most simple level I keep getting errors,
I'm in my first semester so this is all still new to me
employees = {}
employees = open('dictionary_values.txt', 'r')
print(employees['Polly'])
Traceback (most recent call last):
File "main.py", line 3, in <module>
print(employees['Polly'])
TypeError: '_io.TextIOWrapper' object is not subscriptable
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Opening a file creates a file object, or more specifically a _io.TextIOWrapper object, it doesn't magically create a dictionary as most files aren't dictionaries. You'll need to parse your file in some way to create a dictionary. I'd suggest saving your file as a JSON file and using the builtin json module.
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import json # this just loads a file object. It is best to use with syntax so it closes automatically. with open('dictionary_values.txt', 'r') as employees_file_object: # a very common method on file objects is to .read() which saves the text on the file as a single string. employees_file_text = employees_file_object.read() # now we have a JSON string. We need to convert the string into a JSON object using the json module we imported above. employees = json.loads(employees_file_text) # Now you can .pop() off the Polly key/value pair - if it doesn't exist it should be fine. employees.pop('Polly') # this will be an object with no Polly. print(employees) # if you need to then write it to the file, you will do the reverse process above, try to figure out which methods to convert object to string and write to the same file. Your txt file needs to be proper JSON string. Edit: a more educating answer.
Python
docs.python.org › 3 › library › io.html
io — Core tools for working with streams
TextIOWrapper, which extends TextIOBase, is a buffered text interface to a buffered raw stream (BufferedIOBase). Finally, StringIO is an in-memory stream for text. Argument names are not part of the specification, and only the arguments of open() ...
Pythontic
pythontic.com › io › textiowrapper › introduction
The TextIOWrapper class in Python | Pythontic.com
The class TextIOWrapper from the io module of Python Standard Library is a text input-output stream that provides encoding and decoding over an underlying buffer.
OverIQ
overiq.com › python-101 › file-handling-in-python
File Handling in Python - Python Tutorial - OverIQ.com
The file object returned by open() function is an object of type _io.TextIOWrapper. The class _io.TextIOWrapper provides methods and attributes which helps us to read or write data to and from the file.
GitHub
github.com › python › typeshed › issues › 1229
open() returns IO[str] instead of io.TextIOWrapper · Issue #1229 · python/typeshed
May 1, 2017 - with open(pathname, encoding='utf-8') as f_in: print(type(f_in)) <class '_io.TextIOWrapper'>
Author python
Beautiful Soup
tedboy.github.io › python_stdlib › generated › generated › io.TextIOWrapper.html
io.TextIOWrapper — Python Standard Library
io.TextIOWrapper · View page source · class io.TextIOWrapper¶ · Character and line based layer over a BufferedIOBase object, buffer. encoding gives the name of the encoding that the stream will be decoded or encoded with. It defaults to locale.getpreferredencoding.
Python.org
discuss.python.org › python help
Change class from '_io.TextIOWrapper' to 'bytes' - Python Help - Discussions on Python.org
February 5, 2024 - Hello Pythonic minds, I have an text file named “ex23_RawBytes_ConvertedToBytes.txt” These are just text with class ‘_io.TextIOWrapper’ when I checked type in python Any way I can convert them into bytes? The reason I am doing this is that I have all the raw bytes in text but their ...
Top answer 1 of 2
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That expression for line in file splits (streams more accurately) the file by the new line delimiter until it reaches EOF. Think of it a stream that reads until it's a new line, and then returns the characters it just read.
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File-like objects are iterators that produce a line of text on each iteration. Iterators in general just means "things you can loop over exactly once"; files differ from this pattern on insofar as they can (depending on what the represent) be seeked, which would reset the iterator to a new position in the file.
To be clear, they are not sequences; the term "sequence" has specific meaning, and includes the ability to index it, iterate it multiple times in a row or in parallel, all without manually fixing up state.
Python Module of the Week
pymotw.com › 3 › io
io — Text, Binary, and Raw Stream I/O Tools
December 31, 2016 - \xc3\x81\xc3\x87\xc3\x8a' b'Inital value for read buffer' Raw byte streams such as sockets can be wrapped with a layer to handle string encoding and decoding, making it easier to use them with text data. The TextIOWrapper class supports writing as well as reading.
MindStick
mindstick.com › forum › 161312 › what-is-the-role-of-io-textiowrapper-in-python-input-handling
What Is the Role of io.TextIOWrapper in Python Input Handling? – MindStick
March 29, 2025 - Python developers use io.TextIOWrapper to handle text-based stream operations during input and output activities. This Python io module class enables programmers to interact with text-based buffered streams through sys.stdin and sys.stdout and ...
Python Morsels
pythonmorsels.com › how-read-text-file
How to read from a text file - Python Morsels
October 4, 2021 - Python has a built-in open function that accepts a filename (in this case we're using this diary980.md file), and it gives us back a file object: >>> f = open("diary980.md") >>> f <_io.TextIOWrapper name='diary980.md' mode='r' encoding='UTF-8'>
GitHub
github.com › python › cpython › blob › main › Modules › _io › textio.c
cpython/Modules/_io/textio.c at main · python/cpython
class _io.TextIOWrapper "textio *" "clinic_state()->TextIOWrapper_Type"
Author python
KooR.fr
koor.fr › Python › API › python › io › TextIOWrapper › Index.wp
KooR.fr - classe TextIOWrapper - module io - Description de quelques librairies Python
BufferedIOBase BufferedRandom BufferedReader BufferedRWPair BufferedWriter BytesIO FileIO IncrementalNewlineDecoder IOBase RawIOBase StringIO TextIOBase TextIOWrapper ... Vous êtes un professionnel et vous avez besoin d'une formation ? RAG (Retrieval-Augmented Generation)et Fine Tuning d'un LLM Voir le programme détaillé · Vous êtes un professionnel et vous avez besoin d'une formation ? Machine Learning avec Scikit-Learn Voir le programme détaillé Module « io » Python 3.13.2
Top answer 1 of 6
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Use codecs.getreader to produce a wrapper object:
text_stream = codecs.getreader("utf-8")(bytes_stream)
Works on Python 2 and Python 3.
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It turns out you just need to wrap your io.BytesIO in io.BufferedReader which exists on both Python 2 and Python 3.
import io
reader = io.BufferedReader(io.BytesIO("Lorem ipsum".encode("utf-8")))
wrapper = io.TextIOWrapper(reader)
wrapper.read() # returns Lorem ipsum
This answer originally suggested using os.pipe, but the read-side of the pipe would have to be wrapped in io.BufferedReader on Python 2 anyway to work, so this solution is simpler and avoids allocating a pipe.
Reddit
reddit.com › r/learnpython › [deleted by user]
[deleted by user] : r/learnpython
July 11, 2016 - As the Python docs explain: The type of file object returned by the open() function depends on the mode. When open() is used to open a file in a text mode ('w', 'r', 'wt', 'rt', etc.), it returns a subclass of io.TextIOBase (specifically io.TextIOWrapper). When used to open a file in a binary mode with buffering, the returned class is a subclass of io.BufferedIOBase.
Javadoc.io
javadoc.io › static › org.python › jython-standalone › 2.5.2 › org › python › core › io › TextIOWrapper.html
TextIOWrapper (Jython API documentation)
This differs from py3k TextIOWrapper, which currently handles both text mode (py3k text mode is incompatible with Python 2.x's text mode) as well as universal mode. ... Contruct a TextIOWrapper wrapping the given BufferedIOBase. ... Read and return up to size bytes, contained in a String. Returns an empty String on EOF ... Read until EOF. ... Read until size, newline or EOF. Returns an empty string if EOF is hit immediately. ... Write the given String to the IO stream.
Narkive
comp.lang.python.narkive.com › tHIj43fd › io-textiowrapper-readlines
io.TextIOWrapper.readlines
open('/dev/null','r').readlines <built-in method readlines of _io.TextIOWrapper object at 0x10b90ae10> which probably means TextIOWrapper is a C implementation (for performance), not doing the plain old class inheritance you'd get from a pure Python implementation.