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5. Expressions

This chapter explains the meaning of the elements of expressions in Python.

Syntax Notes: In this and the following chapters, extended BNF notation will be used to describe syntax, not lexical analysis. When (one alternative of) a syntax rule has the form

name:           othername

and no semantics are given, the semantics of this form of name are the same as for othername.

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Subsections

• 5.1 Arithmetic conversions
• 5.2 Atoms
  • 5.2.1 Identifiers (Names)
  • 5.2.2 Literals
  • 5.2.3 Parenthesized forms
  • 5.2.4 List displays
  • 5.2.5 Dictionary displays
  • 5.2.6 String conversions
• 5.3 Primaries
  • 5.3.1 Attribute references
  • 5.3.2 Subscriptions
  • 5.3.3 Slicings
  • 5.3.4 Calls
• 5.4 The power operator
• 5.5 Unary arithmetic operations
• 5.6 Binary arithmetic operations
• 5.7 Shifting operations
• 5.8 Binary bit-wise operations
• 5.9 Comparisons
• 5.10 Boolean operations
• 5.11 Expression lists
• 5.12 Summary

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