ImportError: cannot import name

The problem is that you have a circular import: in app.py

from mod_login import mod_login

in mod_login.py

from app import app

This is not permitted in Python. See Circular import dependency in Python for more info. In short, the solution are

  • either gather everything in one big file
  • delay one of the import using local import

Related Posts:

  1. Redirecting to URL in Flask
  2. json.dumps vs flask.jsonify
  3. Internal Redirect in Flask
  4. Get the data received in a Flask request
  5. Get the data received in a Flask request
  6. Flask Template Not found
  7. Return JSON response from Flask view
  8. Flask ImportError: No Module Named Flask
  9. ModuleNotFoundError: No module named ‘MySQLdb’
  10. Flask ImportError: No Module Named Flask
  11. Flask ImportError: No Module Named Flask
  12. ImportError: No Module Named bs4 (BeautifulSoup)
  13. Flask raises TemplateNotFound error even though template file exists
  14. ImportError: No module named MySQLdb
  15. Flask example with POST
  16. Where do I get a SECRET_KEY for Flask?
  17. How can I get the named parameters from a URL using Flask?
  18. Flask Error: “Method Not Allowed The method is not allowed for the requested URL”
  19. In Flask, what is “request.args” and how is it used?
  20. In Flask, what is “request.args” and how is it used?
  21. How does ajax work with python?
  22. Trying to run Flask app gives “Address already in use”
  23. jinja2.exceptions.TemplateNotFound error [duplicate]
  24. How to serve static files in Flask
  25. python flask import error
  26. How do I get Flask to run on port 80?
  27. python-How to set global variables in Flask?
  28. How to get POSTed JSON in Flask?
  29. Flask Value error view function did not return a response [duplicate]
  30. Flask-framework: MVC pattern
  31. Create dynamic URLs in Flask with url_for()
  32. File “/usr/bin/pip”, line 9, in from pip import main ImportError: cannot import name main
  33. How to install pip with Python 3?
  34. pip not recognised as an internal or external command
  35. Import Error: No module named numpy
  36. bash: pip: command not found
  37. Function for Factorial in Python
  38. TypeError: a bytes-like object is required, not ‘str’ when writing to a file in Python3
  39. Writing a pandas DataFrame to CSV file
  40. Purpose of “%matplotlib inline”
  41. Local variable referenced before assignment?
  42. Clickable link inside message discord.py
  43. DataFrame constructor not properly called! error
  44. OSError: [WinError 193] %1 is not a valid Win32 application
  45. How to download a file over HTTP?
  46. Can’t fix “zipimport.ZipImportError: can’t decompress data; zlib not available” when I type in “python3.6 get-pip.py”
  47. Arrays used as indices must be of integer (or boolean) type
  48. How to pass arguments to a Button command in Tkinter?
  49. How to remove specific substrings from a set of strings in Python?
  50. How do I install the yaml package for Python?
  51. Python: Array v. List
  52. What is key=lambda
  53. __init__() takes 1 positional argument but 2 were given
  54. Python function global variables?
  55. How can I convert a character to a integer in Python, and viceversa?
  56. What’s the difference between %s and %d in Python string formatting?
  57. initialize a numpy array
  58. error: Unable to find vcvarsall.bat
  59. AttributeError: Module Pip has no attribute ‘main’
  60. django:django.core.exceptions.AppRegistryNotReady: Apps aren’t loaded yet
  61. Can I force pip to reinstall the current version?
  62. unittest Vs pytest
  63. Add single element to array in numpy
  64. ‘Can’t set attribute’ with new-style properties in Python
  65. How to check if a string is a substring of items in a list of strings?
  66. How to index into a dictionary?
  67. Add a new item to a dictionary in Python
  68. What is the meaning of ‘for _ in range()
  69. How do I check if there are duplicates in a flat list?
  70. Difference between scikit-learn and sklearn
  71. How can I create a text input box with Pygame?
  72. How can I print variable and string on same line in Python?
  73. SettingWithCopyWarning even when using .loc[row_indexer,col_indexer] = value
  74. Append a tuple to a list – what’s the difference between two ways?
  75. How to print multiple lines of text with Python
  76. How to get a function name as a string?
  77. Substitution Cipher Python
  78. Good ways to “expand” a numpy ndarray?
  79. Python data structure sort list alphabetically
  80. TypeError: ‘numpy.float64’ object does not support item assignment
  81. TypeError: sequence item 0: expected string, int found
  82. Why am I getting this unexpected keyword argument TypeError?
  83. Create numpy matrix filled with NaNs
  84. python pandas remove duplicate columns
  85. What is the difference between __str__ and __repr__?
  86. How often does python flush to a file?
  87. How to open every file in a folder
  88. cmake error ‘the source does not appear to contain CMakeLists.txt’
  89. ubuntu /usr/bin/env: python: No such file or directory
  90. How to completely uninstall python 2.7.13 on Ubuntu 16.04
  91. Calculate weighted average using a pandas/dataframe
  92. Telling Python to save a .txt file to a certain directory on Windows and Mac
  93. Spell Checker for Python
  94. TypeError: coercing to Unicode: need string or buffer, int found
  95. Write a program that asks the user to enter five test scores. Correspond it to a letter grade
  96. Simplify Chained Comparison
  97. How to fix SSL issue SSL_CTX_use_certificate : ca md too weak on Python Zeep
  98. Paramiko’s SSHClient with SFTP
  99. Package libffi was not found in the pkg-config search path REDHAT6.5
  100. Line is too long. Django PEP8

Leave a Comment