如何检查字符串是否是Python中的有效关键字？

在编程中，关键字（keyword )是语言的“reserved word”，它向解释器传递特殊的含义。它可以是命令或参数。关键字不能在程序段中用作变量名。

Python中的关键字：Python语言还保留了一些表达特殊含义的关键字。这些知识是学习这门语言的必要部分。下面是python的关键字列表。

False, elif, lambda,None, else, nonlocal,True, except, not,and, finally, or,as, for, pass,assert, from, raise,break, global, return,class, if, try,continue, import, while,def, in, with,del, is, yield,

如何检查字符串是否是关键字?

Python在其语言中定义了一个内置模块“keyword”，它处理与关键字相关的某些操作。函数“iskeyword()”检查字符串是否为关键字。如果字符串是关键字，则返回true，否则返回false。

#Python code to demonstrate working of iskeyword()   # importing "keyword" for keyword operations import keyword   # initializing strings for testing s = "for"s1 = "geeksforgeeks"s2 = "elif"s3 = "elseif"s4 = "nikhil"s5 = "assert"s6 = "shambhavi"s7 = "True"s8 = "False"s9 = "akshat"s10 = "akash"s11 = "break"s12 = "ashty"s13 = "lambda"s14 = "suman"s15 = "try"s16 = "vaishnavi"  # checking which are keywords if keyword.iskeyword(s):         print ( s + " is a python keyword") else :  print ( s + " is not a python keyword")   if keyword.iskeyword(s1):         print ( s1 + " is a python keyword") else :  print ( s1 + " is not a python keyword")   if keyword.iskeyword(s2):         print ( s2 + " is a python keyword") else :  print ( s2 + " is not a python keyword")   if keyword.iskeyword(s3):         print ( s3 + " is a python keyword") else :  print ( s3 + " is not a python keywo<p>本文来源gao!%daima.com搞$代*!码$网9</p>rd")   if keyword.iskeyword(s4):         print ( s4 + " is a python keyword") else :  print ( s4 + " is not a python keyword")   if keyword.iskeyword(s5):         print ( s5 + " is a python keyword") else :  print ( s5 + " is not a python keyword")   if keyword.iskeyword(s6):         print ( s6 + " is a python keyword") else :  print ( s6 + " is not a python keyword")   if keyword.iskeyword(s7):         print ( s7 + " is a python keyword") else :  print ( s7 + " is not a python keyword")   if keyword.iskeyword(s8):         print ( s8 + " is a python keyword") else :  print ( s8 + " is not a python keyword")   if keyword.iskeyword(s9):         print ( s9 + " is a python keyword") else :  print ( s9 + " is not a python keyword")   if keyword.iskeyword(s10):         print ( s10 + " is a python keyword") else :  print ( s10 + " is not a python keyword")   if keyword.iskeyword(s11):         print ( s11 + " is a python keyword") else :  print ( s11 + " is not a python keyword")   if keyword.iskeyword(s12):         print ( s12 + " is a python keyword") else :  print ( s12 + " is not a python keyword")   if keyword.iskeyword(s13):         print ( s13 + " is a python keyword") else :  print ( s13 + " is not a python keyword")   if keyword.iskeyword(s14):         print ( s14 + " is a python keyword") else :  print ( s14 + " is not a python keyword")   if keyword.iskeyword(s15):         print ( s15 + " is a python keyword") else :  print ( s15 + " is not a python keyword")   if keyword.iskeyword(s16):         print ( s16 + " is a python keyword") else :  print ( s16 + " is not a python keyword")

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