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創(chuàng)新互聯(lián)Python教程：python中如何獲取用戶輸入
整數(shù)輸入
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#!/usr/bin/python3
usr_ip = input("Enter an integer number: ")# 需要將輸入的字符串顯式地指定為需要的類型
usr_num = int(usr_ip)
sqr_num = usr_num * usr_num
print("Square of entered number is: {}".format(sqr_num))讓我們給定一個(gè)整數(shù)和字符串來測(cè)定這個(gè)程序
Python docs - 整數(shù)文本
$ ./user_input_int.py Enter an integer number: 23 Square of entered number is: 529 $ ./user_input_int.py Enter an integer number: abc Traceback (most recent call last): File "./user_input_int.py", line 6, inusr_num = int(usr_ip) ValueError: invalid literal for int() with base 10: 'abc'
浮點(diǎn)數(shù)輸入
#!/usr/bin/python3
usr_ip = input("Enter a floating point number: ")
# 需要將輸入的字符串顯式地指定為我們需要的類型
usr_num = float(usr_ip)
sqr_num = usr_num * usr_num
# 限制小數(shù)點(diǎn)位數(shù)
print("Square of entered number is: {0:.2f}".format(sqr_num))E 科學(xué)計(jì)數(shù)法在需要時(shí)可以使用
Python文檔 - 浮點(diǎn)數(shù)文本
Python文檔 - 浮點(diǎn)數(shù)
$ ./user_input_float.py Enter a floating point number: 3.232 Square of entered number is: 10.45 $ ./user_input_float.py Enter a floating point number: 42.7e5 Square of entered number is: 18232900000000.00 $ ./user_input_float.py Enter a floating point number: abc Traceback (most recent call last): File "./user_input_float.py", line 6, inusr_num = float(usr_ip) ValueError: could not convert string to float: 'abc'
字符串輸入
#!/usr/bin/python3
usr_name = input("Hi there! What's your name? ")
usr_color = input("And your favorite color is? ")
print("{}, I like the {} color too".format(usr_name, usr_color))不像Perl，字符串輸入不需要進(jìn)行類型轉(zhuǎn)換和注意換行符
$ ./user_input_str.py Hi there! What's your name? learnbyexample And your favorite color is? blue learnbyexample, I like the blue color too
本文題目：創(chuàng)新互聯(lián)Python教程：python中如何獲取用戶輸入
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