Introducing python's method of determining whether a number is a positive decimal or integer

This article mainly introduces relevant information about python's examples of judging whether it is a positive decimal and a positive integer. Examples are provided here. The explanation of the examples is very clear. Friends in need can refer to

python to judge whether it is positive. Examples of decimals and positive integers

Implementation code:

def check_float(string):
  #支付时，输入的金额可能是小数，也可能是整数
  s = str(string)
  if s.count('.') == 1: # 判断小数点个数
    sl = s.split('.') # 按照小数点进行分割
    left = sl[0] # 小数点前面的
    right = sl[1] # 小数点后面的
    if left.startswith('-') and left.count('-') == 1 and right.isdigit():
      lleft = left.split('-')[1] # 按照-分割，然后取负号后面的数字
      if lleft.isdigit():
        return False
    elif left.isdigit() and right.isdigit():
      # 判断是否为正小数
      return True
  elif s.isdigit():
    s = int(s)
    if s != 0:
      return True
  return False

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