Question

How to case-insensitively check if a character exists in a string with Python

Answer 1

# Convert a character to lowercase
def to_lower_char(c: str) -> str:
    return c.lower()

# Case-insensitive check without a loop
def char_exists_ignore_case(s: str, target: str) -> bool:
    # Convert both to lowercase and use "in" instead of a loop
    return to_lower_char(target) in s.lower()

# Define the string we want to search in
s: str = "PythonLanguage"

# Perform the case-insensitive check
exists: bool = char_exists_ignore_case(s, "p")

# Print the raw boolean result
print(exists)

# Conditional check
if exists:
    print("exists")
else:
    print("not exists")



"""
run:

True
exists

"""

 

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