OverflowError: math range error
OverflowError: (34, 'Result too large')
OverflowError: int too large to convert to float

A calculation produced a number too large for the data type. Python integers have no limit, but floats do.

Fix 1: Float Overflow

# ❌ Float can't hold this
import math
math.exp(1000)  # 💥 e^1000 is too large for float

# ✅ Use the decimal module
from decimal import Decimal
result = Decimal(1000).exp()

Fix 2: Int to Float Conversion

# ❌ Integer too large for float
n = 10 ** 400
f = float(n)  # 💥

# ✅ Keep as integer or use Decimal
from decimal import Decimal
d = Decimal(n)

Fix 3: Large Exponents

# ❌ Power too large
result = 2.0 ** 10000  # 💥

# ✅ Use integer arithmetic (no overflow)
result = 2 ** 10000  # Works — Python ints are arbitrary precision

# ✅ Or use modular exponentiation
result = pow(2, 10000, modulus)

Fix 4: Timestamp Overflow

# ❌ Date too far in the future
from datetime import datetime
datetime.fromtimestamp(99999999999)  # 💥

# ✅ Check range first
import time
max_ts = 32503680000  # Year 3000
if timestamp <= max_ts:
    dt = datetime.fromtimestamp(timestamp)

Fix 5: NumPy Overflow

import numpy as np
# ❌ NumPy integers have fixed size
a = np.int32(2147483647)
b = a + 1  # 💥 Wraps around or overflows

# ✅ Use larger dtype
a = np.int64(2147483647)
b = a + 1  # Works

Related resources

• Python cheat sheet
• Python TypeError fix Related: Python AssertionError — How to Fix It