Question

如何在代码中打印换行符？（Python 2.7）

示例：

print("Hello world, this is a very very long sentence with variables 1:\n%s\nVariable 2:\n%s\nVariable 3:\n%s\nVariable 4:\n%s\nVariable 5:\n%s" % (var1, var2, var3, var4, var5) )

事实上，有更多的变量，但我将这个变为5。

我确实需要＆＃39; \ n＆＃39;。

为了更好的可读性，我需要在代码中的几行上编写这个print语句。但插入一些换行符会使这些换行符出现在输出上（我不想这样做）。

有没有办法不显示换行符（但保持显示所需的＆＃39; \ n＆＃39;）？

Answer 1

我个人只是使用多行字符串作为模板，使代码更清晰。如果您想要查看字符串模块，可以使用更多功能。

variables = (1, 2, 3, 4, 5)


text ="""
Hello world, this is a very ver long sentence with variables:
Varible 1:
{}
Varible 2
{}
Varible 3:
{}
Varible 4:
{}
Varible 5:
{}"""

print(text.format(*variables))

Answer 2

有几种方法可以打破print语句。从你想要的描述（保持明确的换行符）：

print(
    "Hello world, this is a very very long sentence with variables " +
    "1:\n" +
    "{}\n".format(var1) +
    "Variable 2:\n" +
    "{}\n".format(var2) +
    "Variable 3:\n" +
    "{}\n".format(var3) +
    ...etc
)

导致：

>>> var1 = "test1"
>>> var2 = "test2"
>>> var3 = "test3"
>>> print(
        "Hello world, this is a very very long sentence with variables " +
        "1:\n" +
        "{}\n".format(var1) +
        "Variable 2:\n" +
        "{}\n".format(var2) +
        "Variable 3:\n" +
        "{}\n".format(var3)
    )
Hello world, this is a very very long sentence with variables 1:
test1
Variable 2:
test2
Variable 3:
test3

>>>

我更喜欢：

print(
"""
Hello world, this is a very very long sentence with variables 1:
{}
Variable 2:
{}
Variable 3:
{}
""".format(var1, var2, var3)
)

...得到相同的结果。

Answer 3

在没有缩进标签的情况下为我工作的解决方案看起来如此：

                printtxt = ("Variables {} <- {} estimation parameters are:\n"
                            "Retval: {}\n"
                            "Charge transfert:\n {} \n"
                            "Amount:\n {} \n"
                            "Stats:\n {} \n"
                            "ZHA:\n {} \n"
                            "First eig (rad):\n {} \n"
                            "First eig (deg.):\n {} \n"
                            "Trans. :\n {} \n"
                            "Valids:\n {} \n"
                            "Dot product:\n {} \n"
                            )

                print(printtxt.format(var1, var2, var3, 
                                      var4, var5, var6, 
                                      var7, var8,
                                      (var90,var91,var92), 
                                      var10, var11,
                                      (np.dot(A,B.T)) 
                                     ) 
                     )

这也适用于将结果写入文件：

                f1.write(printtxt.format(var1, var2, var3, 
                                      var4, var5, var6, 
                                      var7, var8,
                                      (var90,var91,var92), 
                                      var10, var11,
                                      (np.dot(A,B.T)) 
                                     ) 
                     )

打印\ n但不是美学换行符？

3 个答案: