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It also is built from the symbols < (less than) and ≈ (approximately equal) in the very same way as ≦ (less or equal) is built from ... ... <看更多>

If this "less than or equal" symbol is the only math in your code, it is simplest to use a unicode string: import matplotlib.pyplot as plt ... ... <看更多>

Type less than equal to sign on Microsoft office, including word, excel, and PowerPoint. Saved by Math Symbols. Number VideosSignsSign MeaningPage ... ... <看更多>