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Python(十)——拼接字符串的效率对比

import timedef str1():    time0 = time.time()    a = ''    for i in range(10000):        a+='str'    time1 = time.time()    print(time1-time0)def str2():    time0 = time.time()    list1 = []    for i in range(10000):        list1.append('str')    ''.join(list1)    time1 = time.time()    print(time1-time0)if __name__=='__main__':    str1() #0.003031492233276367    str2() #0.0019953250885009766

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