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Browsing Category

Python

57 posts

How to Conda update Python in virtual environment?

  • Akash Mittal
  • November 17, 2022
There are multiple ways to update Python using Anaconda. You can create a virtual environment with desired version of Python or you can also install target Python version in main…
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cannot import name 'to_categorical' from 'keras.utils' python tensorflow error
  • Python

    cannot import name ‘to_categorical’ from ‘keras.utils’

    • Akash Mittal
    • September 4, 2022
    Python Tensorflow throws error “cannot import name ‘to_categorical’ from ‘keras.utils’” when you are using Tensorflow version 2 but implementing the older syntax. Solution Instead of using this syntax for importing…
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    pip is being invoked by an old script wrapper python error
    • Python

      pip is being invoked by an old script wrapper

      • Akash Mittal
      • September 4, 2022
      Python throws error “pip is being invoked by an old script wrapper” either due to incompatible pip version or due to multiple versions of pip. Solution To resolve this error,…
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      Python Poetry could not find pyproject.toml file
      • Python

        Poetry could not find a pyproject.toml file

        • Akash Mittal
        • September 4, 2022
        Python poetry throws error “Poetry could not find a pyproject.toml file” when it is not able to find pyproject.toml file in project directory. It means Poetry is not initialized properly.…
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        python run bash script in background
        • Python

          python run bash script in background

          • Akash Mittal
          • September 5, 2022
          Python subprocess library is used to run processes like bash script in the background. It can create new processes, connect with their input/output/error pipes and obtain their error codes. Code…
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          Only length-1 arrays can be converted to python scalars
          • Python

            Only length-1 arrays can be converted to python scalars

            • Akash Mittal
            • September 5, 2022
            Numpy throws error – only length-1 (size-1) arrays can be converted to python scalars when you are passing an array to a Python inbuild function which expects single value. This…
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            Python TypeError: Unhashable Type: ‘list’

            • Akash Mittal
            • September 5, 2022
            Python throws typeerror: unhashable type list when an integer or float is expected but got list. In other terms, a list can’t be hashed. Only integers or floats can. If…
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            ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()

            • Akash Mittal
            • September 5, 2022
            Python throws ValueError: The truth value of a series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all() when you try to get the bool of Pandas.Series. This issue occurs…
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            Python TypeError: can’t multiply sequence by non-int of type ‘float’

            • Akash Mittal
            • September 5, 2022
            Python throws typeerror: can’t multiply sequence by non-int of type ‘float’ when you try to multiply a string with float value. Although you can multiply a string with int value…
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            Convert list to string in Python

            • Akash Mittal
            • September 5, 2022
            Python provides join() function which could be used to convert list to string. If the items of the list are not string then you may need to convert them to…
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            Cpu supports instructions that this tensorflow binary was not compiled to use: avx2 fma

            • Akash Mittal
            • April 21, 2021
            When I was working on my new tensorflow project, I got the warning that CPU supports instructions that this tensorflow binary was not compiled to use: avx2, fma. This shows…
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            Pandas iterate over rows – Python

            • Akash Mittal
            • September 5, 2022
            Python pandas provides iterrows() function which can be used to iterate over rows in dataframe. Consider this example – In order to iterate row by row, we need to run…
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            syntaxerror: unexpected eof while parsing Python – Code Example

            • Akash Mittal
            • September 5, 2022
            Python throws syntaxerror: unexpected eof while parsing, when there is – extra open parenthesis, extra quote in strings, missed parenthesis, try block without finally, loops or conditions without body. In…
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            ValueError: the truth value of an array with more than one element is ambiguous. use a.any() or a.all()

            • Akash Mittal
            • September 5, 2022
            Python numpy throws valueerror: the truth value of an array with more than one element is ambiguous. use a.any() or a.all(), when an array is compared using some boolean form.…
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            How to rename columns in Pandas Python?

            • Akash Mittal
            • September 5, 2022
            To rename columns in dataframe in Pandas python, you can either provide new columns in column property or you can use rename() function. Consider this code – In this code…
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            modulenotfounderror: no module named ‘numpy’

            • Akash Mittal
            • April 6, 2021
            Python throws modulenotfounderror: no module named ‘numpy’, in four conditions – When you have multiple versions of python installed and you installed numpy on one version but using different one…
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            typeerror: only integer scalar arrays can be converted to a scalar index

            • Akash Mittal
            • September 5, 2022
            Python numpy throws the typeerror: only integer scalar arrays can be converted to a scalar index, when an ordinary list is indexed with scalar index. Generally, its possible with numpy…
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            Python convert bytes to string

            • Akash Mittal
            • September 5, 2022
            If you want to convert bytes to string in Python, then you may use multiple ways of doing that. In this article, we are going to look at few methods.…
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            Python check if list is empty

            • Akash Mittal
            • September 5, 2022
            To check if list is empty in Python, you can use multiple methods like – if not list_var: or if len(list_var) == 0:. There are many ways but not all…
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            Python dictionary add, delete, update, exists keys with performance

            • Akash Mittal
            • September 5, 2022
            To work with Python dictionary, we should know how to add, delete, update and check the existence of keys. In this article we will look at different methods and calculate…
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