Data Preprocessing: Pandas Conditionals and PreprocessingUnsolved
Educational Resource: https://web.stanford.edu/class/cs102/readings/pandasreferences.htm
Problem reported in interviews at
Given a pandas dataframe, run the following data preprocessing steps:
- If the value of col2 >= 1000, replace the value in col1 to 1000.
- Return a list of strings representing the values of col1.
df: col1 col2 col3 0 1 2000 3 1 400 5 6 2 7 8 9
0 0 1000 1 400 2 7
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numpy has been already imported as np (import numpy as np)