pandas.DataFrame.to_clipboard with excel option does not parse into columns with 0.23

[kentmaxwell]

Problem description

With Version 0.23 of pandas, the function .to_clipboard(), with the option excel=True no longer produces a copy of the dataframe which is Excel friendly when pasting the data into an Excel worksheet. All the data comes into a single column in the Excel workbook. Previously, the data would parse across all the columns.

The code that demonstrates this situation is:

Import pandas as pd
df = pd.DataFrame(np.random.randn(5,10))

df.to_clipboard(excel=True)

The output in excel ends up looking like this:

https://www.screencast.com/t/DPTOukwE

Output of pd.show_versions()

INSTALLED VERSIONS

commit: None
python: 3.6.5.final.0
python-bits: 64
OS: Darwin
OS-release: 17.5.0
machine: x86_64
processor: i386
byteorder: little
LC_ALL: en_US.UTF-8
LANG: en_US.UTF-8
LOCALE: en_US.UTF-8

pandas: 0.23.0
pytest: 3.5.1
pip: 10.0.1
setuptools: 39.1.0
Cython: 0.28.2
numpy: 1.13.3
scipy: 1.1.0
pyarrow: None
xarray: None
IPython: 6.4.0
sphinx: 1.7.4
patsy: 0.5.0
dateutil: 2.7.3
pytz: 2018.4
blosc: None
bottleneck: 1.2.1
tables: 3.4.3
numexpr: 2.6.5
feather: None
matplotlib: 2.2.2
openpyxl: 2.5.3
xlrd: 1.1.0
xlwt: 1.2.0
xlsxwriter: 1.0.4
lxml: 4.2.1
bs4: 4.6.0
html5lib: 1.0.1
sqlalchemy: 1.2.7
pymysql: None
psycopg2: None
jinja2: 2.10
s3fs: None
fastparquet: None
pandas_gbq: None
pandas_datareader: None

[WillAyd]

Quick debug shows me that what was previously tab delimited is now showing up with spaces, hence why the paste to Excel does not work.

Investigation / PRs are welcome!

[chris-b1]

Ugh, sorry about this, I use this all the time and should have caught it in the RC. I'll eventually get this, or please feel to take look first!

[jcjf]

The problem was introduced in #18968, when '\t' started becoming r'\t' in pandas.io.clipboards.py.