python isdigit()函数的最好实践
isdigit()函数用于检查字符串是否是只包括数字字符。以下是isdigit()函数的最好实践:
s = "12345"
if s.isdigit():
print("Only contains digits")
s = "12345"
for char in s:
if not char.isdigit():
print("String contains non-digit characters")
break
s = "12345"
if s.isdigit() and len(s) == 5:
print("String is a 5-digit number")
s = "⑴23.45"
if s.lstrip('-').replace('.', '', 1).isdigit():
print("String is a negative decimal number")
总的来讲,isdigit()函数在处理检查字符串中是否是只包括数字字符时非常有用,但在特定情况下可能需要额外的逻辑来处理其他情况。
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