Google colab: No module named pytextrank can be found (worked previously with the same notebook)

Question

Since recently I have been getting this error whenever I run my notebook:

ModuleNotFoundError: No module named 'pytextrank'

Here is the link to my notebook: https://colab.research.google.com/github/neomatrix369/awesome-ai-ml-dl/blob/master/examples/better-nlp/notebooks/jupyter/better_nlp_summarisers.ipynb#scrollTo=-dJrJ54a3w8S

Although checks show that the library is installed, python import fails - I have had this once in a different scenario and fixed it using:

python -m pip install pytextrank

But this does not have any impact, the error still persists.

This wasn't a problem in the past and the same notebook worked well - I think it might be a regression.

Any thoughts? Any useful feedback will be highly appreciated.

Here is the code that I invoke:

import pytextrank
import sys
import networkx as nx
import pylab as plt

And I get this in the colab cell:

[nltk_data] Downloading package stopwords to /root/nltk_data...
[nltk_data]   Unzipping corpora/stopwords.zip.
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-3-7f30423e40f2> in <module>()
      3 sys.path.insert(0, './awesome-ai-ml-dl/examples/better-nlp/library')
      4 
----> 5 from org.neomatrix369.better_nlp import BetterNLP

1 frames
/content/awesome-ai-ml-dl/examples/better-nlp/library/org/neomatrix369/summariser_pytextrank.py in <module>()
----> 1 import pytextrank
      2 import sys
      3 import networkx as nx
      4 import pylab as plt
      5 

ModuleNotFoundError: No module named 'pytextrank'

---------------------------------------------------------------------------
NOTE: If your import is failing due to a missing package, you can
manually install dependencies using either !pip or !apt.

To view examples of installing some common dependencies, click the
"Open Examples" button below.

Answer 1

You can run a cell to use pip to install pytextrank explicitly in Colab:

!pip install pytextrank

After that, assuming a data file mih.json has been created or uploaded, the following code runs in Colab:

import pytextrank

path_stage0 = "mih.json"
path_stage1 = "o1.json"

with open(path_stage1, 'w') as f:
    for graf in pytextrank.parse_doc(pytextrank.json_iter(path_stage0)):
        f.write("%s\n" % pytextrank.pretty_print(graf._asdict()))

graph, ranks = pytextrank.text_rank(path_stage1)

for rl in pytextrank.normalize_key_phrases(path_stage1, ranks):
    print(pytextrank.pretty_print(rl))

generating this output:

["systems", 0.11805817287949238, [2], "np", 1]
["mixed types", 0.09727027009440953, [31, 24], "np", 1]
["minimal set", 0.0656181165649375, [19, 5], "np", 1]
["considered", 0.05314007683878527, [15], "vbn", 2]
["strict inequations", 0.05291409382374228, [11, 12], "np", 1]
["natural numbers", 0.0502966356772243, [6, 7], "np", 1]
["types", 0.048635135047204764, [24], "nns", 3]
["be", 0.04857443543935028, [14], "vb", 3]
["set", 0.03280905828246875, [5], "nn", 4]
["minimal generating sets", 0.03280905828246875, [19, 23, 5], "np", 1]
["solving", 0.03256884170337274, [30], "vbg", 1]
["solutions", 0.030576007873278972, [20], "nns", 3]
["linear constraints", 0.0271278909527188, [3, 4], "np", 1]
["linear diophantine equations", 0.0271278909527188, [3, 9, 10], "np", 1]
["inequations", 0.02645704691187114, [12], "nns", 2]
["nonstrict inequations", 0.02645704691187114, [13, 12], "np", 1]
["numbers", 0.02514831783861215, [7], "nns", 1]
["used", 0.021117092168160108, [29], "vbn", 1]
["given", 0.020891260341666464, [25], "vbn", 1]
["supporting", 0.014650048747874869, [28], "vbg", 1]
["constraints", 0.0135639454763594, [4], "nns", 1]
["diophantine", 0.0135639454763594, [9], "nnp", 1]
["generating", 0.013543878573169788, [23], "nn", 1]
["algorithms", 0.013397910676526051, [21], "nns", 2]
["equations", 0.013056662983606804, [10], "nns", 1]
["constructing", 0.012594570053681782, [27], "vbg", 1]
["upper bounds", 0.012248038294705636, [16, 17], "np", 1]
["nonstrict", 0.011793629610984586, [13], "nn", 1]
["components", 0.0113294598001366, [18], "nns", 1]
["construction", 0.009991849727289892, [22], "nn", 1]
["compatibility", 0.006124019147352818, [1], "nn", 2]
["bounds", 0.006124019147352818, [17], "nns", 1]
["corresponding", 0.006124019147352818, [26], "vbg", 1]
["criteria", 0.004297554552892375, [8], "nns", 2]