TypeError: coercing to Unicode: need string or buffer, NoneType found in Python
Currently I write a function for a program and one component is to find out if separate variables are used in the python file. Like this:
def SINGLE_CHAR_VAR(python_filename):
file = open(python_filename)
lines = [0]
SINGLE_CHAR_VAR = []
for line in file:
stripped = line.strip('\n\r')
lines.append(stripped)
from utils import vars_indents
variable_list = (vars_indents(python_filename))[0]
for i in range(1, len(variable_list)):
if len(variable_list[i][0][0]) == 1:
SINGLE_CHAR_VAR.append(['SINGLE_CHAR_VAR', i, variable_list[i][0][1], variable_list[i][0][0], lines[i]])
return SINGLE_CHAR_VAR
When I used the function on its own - the function works correctly. However, when I call the program as a whole - I get the following error message TypeError: coercing to Unicode: need string or buffer, NoneType found:
Traceback (most recent call last):
File "<web session>", line 1, in <module>
File "lint_2.py", line 141, in lint
sorted_error_list = sorted_list(list_of_file_errors)
File "lint_2.py", line 84, in sorted_list
error_list = total_error_list(python_filename)
File "lint_2.py", line 65, in total_error_list
single_char_var_list = SINGLE_CHAR_VAR(python_filename)
File "lint_2.py", line 33, in SINGLE_CHAR_VAR
file = open(python_filename)
TypeError: coercing to Unicode: need string or buffer, NoneType found
I have absolutely no idea where I am wrong - any help would be very, very, very welcome !!!
Thanks for any suggestions.
- p1
pablo C Sep 17 2021
Try to write it like this:
ssh.exec_command() stdin.flush() stdin.channel.shutdown_write()
It should work.
- D0
Dhiraj Goplani Sep 17 2021
Why
python_filename
is thisNone
, you cannot tell from the code you posted. The feedback you provided assumes the value comes from a functionsorted_list()
, I suggest you start looking for clues there:File "lint_2.py", line 84, in sorted_list error_list = total_error_list(python_filename)
However, this is just speculation; you will have to trace through all the code in this trace to see exactly where it is being
None
installed the first time.
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