0 basic Science python-5.1 Digital Brief introduction

1. Create a numeric object and assign a value

a=1# integer b=1.1# floating point c=1.23e5# real d=1.23+4.56j# imaginary number

2. Updating numeric objects

Note: Because the numeric object is immutable, it is better to remove the variable name from an object and paste it into a new object.

From being able to see even though the same assignment is 1000, the IDs of the two are different, representing different objects, just the same value.

3. Delete a Numeric object

According to the 2nd, in fact the so-called deletion is actually not the use of that numerical object, assuming strict deletion, then need to use del this keyword

After running the Del operation, a actually no longer exists, so print error. Say a doesn't define

Here we are, thank you.

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0 basic Science python-5.1 Digital Brief introduction