How do I Add Leading Zeros to Strings in a Pandas DataFrame?

Augmenting Strings with Leading Zeros in Pandas Dataframe

Problem:

Given a pandas dataframe with the first three columns as strings, the goal is to add leading zeros to the 'ID' column, ultimately resulting in a 15-digit padded string.

Solution:

<code class="python">df['ID'] = df['ID'].str.zfill(15)</code>

The 'str' attribute in pandas provides a wide range of methods for string manipulation. Utilizing the 'zfill' method allows us to pad the 'ID' column with leading zeros up to the specified width, in this case, 15 characters.

Note:

The provided code assumes that the 'ID' column is of type 'object' or 'string'. If it is of a numeric type, it may need to be converted to a string before applying the 'zfill' method.

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