How can we unpack a string of integers to complex numbers in Python?

A string containing two integers separated by a comma can be unpacked and converted into a complex number. Python provides several approaches to achieve this conversion.

Method 1: Using split() and Indexing

First, split the string into a list of string digits, then convert each part to integers for the complex() function ?

s = "1,2".split(",")
print("Split result:", s)

# Convert to complex number
result = complex(int(s[0]), int(s[1]))
print("Complex number:", result)

Split result: ['1', '2']
Complex number: (1+2j)

Method 2: Using Unpacking with map()

Use map() to convert all parts to integers simultaneously, then unpack them ?

s = "3,4"
real, imag = map(int, s.split(","))
result = complex(real, imag)
print("Complex number:", result)

Complex number: (3+4j)

Method 3: One-Line Solution

Combine all operations in a single line using unpacking ?

s = "5,6"
result = complex(*map(int, s.split(",")))
print("Complex number:", result)

Complex number: (5+6j)

Handling Different Formats

You can adapt this approach for different separators or formats ?

# Different separators
s1 = "7 8"  # space separator
s2 = "9:10" # colon separator

result1 = complex(*map(int, s1.split(" ")))
result2 = complex(*map(int, s2.split(":")))

print("Space separated:", result1)
print("Colon separated:", result2)

Space separated: (7+8j)
Colon separated: (9+10j)

Comparison

Conclusion

Use split() and complex() to unpack string integers into complex numbers. The map() function with unpacking provides a more elegant solution for this conversion.