In a programming language, assignment operators are typically used to assign values to variables.

In Python, the basic assignment operator works like this:

Operator | Description | Example |
---|---|---|

`=` |
Assign a value to a variable | `x = 2` |

Python also has seven arithmetic assignment operators, which are a sort of shorthand for performing two operations in sequence -- 1) arithmetic between a variable operand on the left of the expression and some other value on the right, and then 2) the assigning of the result back to the original variable:

Operator | Description | Example | Equivalent To |
---|---|---|---|

`+=` |
Add a value to a variable | `x += 2` |
`x = x + 2` |

`-=` |
Subtract a value from a variable | `x -= 2` |
`x = x - 2` |

`*=` |
Multiply a variable by a value | `x *= 2` |
`x = x * 2` |

`**=` |
Raise a variable to the power of a value (exponentiation) | `x **= 2` |
`x = x ** 2` |

`/=` |
Divide a variable by a value | `x /= 2` |
`x = x / 2` |

`//=` |
Divide a variable by a value, and round down (floor division) | `x //= 2` |
`x = x // 2` |

`%=` |
The remainder of dividing a variable by a value (modulo) | `x %= 2` |
`x = x % 2` |

Similarly, Python also has five bitwise assignment operators. These perform bitwise operations (the subject of a future article... ) between the left operand variable and a value on the right, assigning the result back to the variable:

Operator | Description | Example | Equivalent To |
---|---|---|---|

`&=` |
Bitwise AND | `x &= 2` |
`x = x & 2` |

`|=` |
Bitwise OR | `x |= 2` |
`x = x | 2` |

`^=` |
Bitwise XOR | `x ^= 2` |
`x = x ^ 2` |

`>>=` |
Bitwise right shift | `x >>= 2` |
`x = x >> 2` |

`<<=` |
Bitwise left shift | `x <<= 2` |
`x = x << 2` |

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