Python is a case-sensitive language because it distinguishes between identifiers like Variable and variable . In simple words, we can say it cares about uppercase and lowercase.
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Dictionary Keys Are Case-Sensitive : Dictionary Key « Dictionary « Python.
Read moreAre Python dict keys case-sensitive?
A Python dictionary sub-class that is case-insensitive when searching , but also preserves the keys as inserted. when keys are listed, ie, via keys() or items() methods. pair as the key’s value (values become dictionaries).
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