Python · Theory

Python Numbers

Theory

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Python Numbers

Numbers in Python are int, float, and complex. int has no fixed 32-bit cap — 10**20 is still an int. float is decimal, but binary floating point is approximate: 0.1 + 0.2 is not exactly 0.3. complex uses a+bj for science work; freshers rarely need it on day one.

Cast with int("5"), float(3). int("Asha") raises ValueError. Interview: int is unlimited precision; float has precision limits. Don’t claim float is “exact money” — use Decimal later if they push.

Python Numbers — output — 32, 3.5, 3. Power, true divide, floor divide.

Exam tip

int vs float with one precision caveat.

Example

# Numbers
print(2 ** 5)
print(7 / 2)
print(7 // 2)

Python Numbers — output: 32, 3.5, 3. Power, true divide, floor divide.

Short notes

Defint / float / complex.
Ruleint can be huge.
Trap0.1 + 0.2 exact float.

Python · Theory

Python Numbers

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Theory

15/268

Python Numbers

Python Numbers — output — 32, 3.5, 3. Power, true divide, floor divide.

Exam tip

int vs float with one precision caveat.

Example

# Numbers
print(2 ** 5)
print(7 / 2)
print(7 // 2)

Python Numbers — output: 32, 3.5, 3. Power, true divide, floor divide.

Short notes

Defint / float / complex.
Ruleint can be huge.
Trap0.1 + 0.2 exact float.

Python Numbers

Example

Short notes

Questions

Python Numbers

Example

Short notes

Questions