Question

代码显示为：

file=open('cake.txt','w')

出现以下内容：

Traceback (most recent call last):
  File "<pyshell#19>", line 1, in <module>
open('cake.txt','w')
TypeError: an integer is required (got type str)

此语法在3.6版本上可以完美运行，现在我升级到了3.7，但现在还没有。这是怎么回事顺便说一下，“ cake.txt”文件不存在。

python文档也无济于事。

Answer 1

如果是的话，那就是

FXX_03_Data_8To11_byAgeRange <- structure(list(F20_AgeRange = c("26 - 30",    "31 - 35", "36 - 40", 
                            "41 - 45", "46 - 50", "51 - 55", "56 - 60"),
                            n_Count = c(5L,13L, 59L, 110L, 52L, 14L, 2L),
                            Prozent = c(2, 5.1, 23.1, 43.1,20.4, 5.5, 0.8)),
                            .Names = c("F20_AgeRange", "n_Count", "Prozent"),
                            class = c("tbl_df", "tbl", "data.frame"),
                            row.names = c(NA, -7L))

FXX_03_Data_byAgeRange <- structure(list(F20_AgeRange = c("18 – 25", "26 - 30", "31 - 35", 
                            "36 - 40", "41 - 45", "46 - 50", "51 - 55", "56 - 60"),
                            n_Count = c(3L,12L, 25L, 65L, 118L, 58L, 19L, 4L),
                            Prozent = c(1, 3.9, 8.2, 21.4, 38.8, 19.1, 6.2, 1.3)),
                            .Names = c("F20_AgeRange", "n_Count", "Prozent"),
                            class = c("tbl_df", "tbl", "data.frame"),
                            row.names = c(NA, -8L))


ggplot() + 
geom_bar(data = FXX_03_Data_8To11_byAgeRange, aes(x = F20_AgeRange, y = Prozent, fill = "Parents 8 to 11"), stat = "identity", width = 0.4, position = position_nudge(x = 0.25)) +
geom_bar(data = FXX_03_Data_byAgeRange, aes(x = F20_AgeRange, y = Prozent, fill = "Parents accumulated"), stat = "identity", width = 0.4, position = position_nudge(x = - 0.25))

您已将open替换为os.open。 from os import *将是您尝试传递flags的{{1}}，但实际上可能不是您想要的功能。

open函数和方法有很多。最好注意通配符的导入。

（例如，如果是在交互式会话中，则还可以输入int，这应该使您对正在处理的mode有个好主意。

社区Wiki答案反映了评论...随时可以改进。

Open（）是否需要整数？

1 个答案: