[Python]文字列の長さを指定し制限！文字数で揃える方法

text = "Python"
length = len(text)
print(f'The length of the string is: {length}')

text = "Python"

# 左寄せ
left_aligned = text.ljust(10)
print(f'Left Aligned: "{left_aligned}"')

# 中央揃え
center_aligned = text.center(10)
print(f'Center Aligned: "{center_aligned}"')

# 右寄せ
right_aligned = text.rjust(10)
print(f'Right Aligned: "{right_aligned}"')

text = "Python is amazing"

# 文字数を制限（左から）
limited_text = text[:6]
print(f'The limited text is: "{limited_text}"')

number = "42"

# 右寄せにして指定した長さになるように0で埋める
padded_number = number.zfill(5)
print(f'The padded number is: "{padded_number}"')

import unicodedata

def length_double_byte_str(text):
    count = 0
    for char in text:
        if unicodedata.east_asian_width(char) in 'FWA':
            count += 2
        else:
            count += 1
    return count

text = "abcあいう"
length = length_double_byte_str(text)
print(f'The length of the string is: {length}')

def truncate_double_byte_str(text, limit):
    count = 0
    truncated_text = ''
    for char in text:
        if unicodedata.east_asian_width(char) in 'FWA':
            count += 2
        else:
            count += 1

        if count > limit:
            break
        truncated_text += char
    return truncated_text

text = "abcあいう"
truncated_text = truncate_double_byte_str(text, limit=5)
print(f'The truncated text is: "{truncated_text}"')