label1 = "Label1"
value1 = "日本語は漢字と仮名で書きます。"
label2 = "L2"
value2 = "Short label & value"
label3 = "Thai text"
value3 = "กรุงเทพฯ"      # short name for Bangkok in Thai

info_data = ((label1, value1),
             (label2, value2),
             (label3, value3))

max_label_len = max(len(label) for label, _ in info_data)
max_value_len = 40          # a guess, no way to get actual print length
box_width = max(50, max_label_len + max_value_len + 7)

print("┌" + "─" * box_width + "┐")

# using simple print()s
for (label, value) in info_data:
    print("│" + " " * box_width + "│", end="")      # print entire line, blank filled
    print("\b" * box_width, end="")                 # backspace to start of label field
    print(" " * (max_label_len-len(label)), end="") # print label spacer depending on length
    print(label, end="")                            # print label
    print(": ", end="")                             #   and delimiter
    print(value)                                    # then the value

# same but using f-strings
print(f"├{'─' * box_width}┤")

for (label, value) in info_data:
    print(f"│{' ' * box_width}│{'\b'*box_width}{label:>{max_label_len}}: {value}")

print(f"└{'─' * box_width}┘")