String in Python (14)

#python #string #str #function

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*Memos:

My post explains a string.

`isdecimal()` < `isdigit()` < `isnumeric()`. *`True` is returned for more numeric strings as going from the left to the right.

isdecimal() can check if a string only has decimal characters and isn't empty as shown below. *It has no arguments:

print('12345'.isdecimal())     # Lowercase Arabic Numeral
print('１２３４５'.isdecimal()) # Uppercase Arabic Numeral
print('١٢٣٤٥'.isdecimal())     # 12345 (Eastern Arabic Numeral)
# True

print('¹²³⁴⁵'.isdecimal())     # 12345 (Superscript Arabic Numeral)
print('₁₂₃₄₅'.isdecimal())     # 12345 (Subscript Arabic Numeral)
print('ⅻ'.isdecimal())        # 12 (Lowercase Roman Numeral)
print('Ⅻ'.isdecimal())       # 12 (Uppercase Roman Numeral)
print('十二'.isdecimal())      # 12 (Japanese Kanji Numeral)
print('壱弐'.isdecimal())      # 12 (Japanese Kanji Numeral)
print('-12345'.isdecimal())
print('1 2 3 4 5'.isdecimal()) # With spaces
print('1.2345'.isdecimal())
print('1,2345'.isdecimal())
print('1.23+4.5j'.isdecimal())
print('xii'.isdecimal())       # 12 (Lowercase Alphabet)
print('XII'.isdecimal())       # 12 (Uppercase Alphabet)
print(''.isdecimal())
# False

# Extra
print('①②③④⑤'.isdecimal())
print('⓵⓶⓷⓸⓹'.isdecimal())
print('❶❷❸❹❺'.isdecimal())
print('➊➋➌➍➎'.isdecimal())
print('⑴⑵⑶⑷⑸'.isdecimal())
print('⒈⒉⒊⒋⒌'.isdecimal())
print('1⃣2⃣3⃣4⃣5⃣'.isdecimal())
# False

isdigit() can check if a string only has digital characters and isn't empty as shown below. *It has no arguments:

print('12345'.isdigit())     # Lowercase Arabic Numeral
print('１２３４５'.isdigit()) # Uppercase Arabic Numeral
print('١٢٣٤٥'.isdigit())     # 12345 (Eastern Arabic Numeral)
print('¹²³⁴⁵'.isdigit())     # 12345 (Superscript Arabic Numeral)
print('₁₂₃₄₅'.isdigit())     # 12345 (Subscript Arabic Numeral)
# True

print('ⅻ'.isdigit())        # 12 (Lowercase Roman Numeral)
print('Ⅻ'.isdigit())       # 12 (Uppercase Roman Numeral)
print('十二'.isdigit())      # 12 (Japanese Kanji Numeral)
print('壱弐'.isdigit())      # 12 (Japanese Kanji Numeral)
print('-12345'.isdigit())
print('1 2 3 4 5'.isdigit()) # With spaces
print('1.2345'.isdigit())
print('1,2345'.isdigit())
print('1.23+4.5j'.isdigit())
print('xii'.isdigit())       # 12 (Lowercase Alphabet)
print('XII'.isdigit())       # 12 (Uppercase Alphabet)
print(''.isdigit())
# False

# Extra
print('①②③④⑤'.isdigit())
print('⓵⓶⓷⓸⓹'.isdigit())
print('❶❷❸❹❺'.isdigit())
print('➊➋➌➍➎'.isdigit())
print('⑴⑵⑶⑷⑸'.isdigit())
print('⒈⒉⒊⒋⒌'.isdigit())
# True

print('1⃣2⃣3⃣4⃣5⃣'.isdigit())
# False

isnumeric() can check if a string only has numeric characters and isn't empty as shown below. *It has no arguments:

print('12345'.isnumeric())     # Lowercase Arabic Numeral
print('１２３４５'.isnumeric()) # Uppercase Arabic Numeral
print('١٢٣٤٥'.isnumeric())     # 12345 (Eastern Arabic Numeral)
print('¹²³⁴⁵'.isnumeric())     # 12345 (Superscript Arabic Numeral)
print('₁₂₃₄₅'.isnumeric())     # 12345 (Subscript Arabic Numeral)
print('ⅻ'.isnumeric())        # 12 (Lowercase Roman Numeral)
print('Ⅻ'.isnumeric())       # 12 (Uppercase Roman Numeral)
print('十二'.isnumeric())      # 12 (Japanese Kanji Numeral)
print('壱弐'.isnumeric())      # 12 (Japanese Kanji Numeral)
# True

print('-12345'.isnumeric())
print('1 2 3 4 5'.isnumeric()) # With spaces
print('1.2345'.isnumeric())
print('1,2345'.isnumeric())
print('1.23+4.5j'.isnumeric())
print('xii'.isnumeric())       # 12 (Lowercase Alphabet)
print('XII'.isnumeric())       # 12 (Uppercase Alphabet)
print(''.isnumeric())
# False

# Extra
print('①②③④⑤'.isnumeric())
print('⓵⓶⓷⓸⓹'.isnumeric())
print('❶❷❸❹❺'.isnumeric())
print('➊➋➌➍➎'.isnumeric())
print('⑴⑵⑶⑷⑸'.isnumeric())
print('⒈⒉⒊⒋⒌'.isnumeric())
# True

print('1⃣2⃣3⃣4⃣5⃣'.isnumeric())
# False